2021

2020

2015

2014

2009

  • 192. V.Voloshin. Graph Coloring: History, results and open problems. Alabama Journal of Mathematics, Spring/Fall 2009.
  • 191. Bujtas, Csilla and Tuza, Zsolt. Coloring intervals with four types of constraints. In: 6th Japanese-Hungarian Symposium on on Discrete Mathematics and Its Applications. (A. Frank et al., Eds.), Budapest, Hungary, May 16-19, 2009, 393–401.
  • 190. Zs. Tuza, G. Bacso, Cs. Bujtas, V. Voloshin. Hypergraph coloring: new kinds of problems. In: Midsummer Combinatorial Workshop 2008 (J. Maxova, Ed.), KAM-DIMATIA Series Vol. 916 (2009), 92–94.
  • 189. Csilla Bujtas, Zsolt Tuza. C-perfect hypergraphs. Journal of Graph Theory. Volume 64 Issue 2, Pages 132 – 149. Published Online: 20 Oct 2009.
  • 188. V. Voloshin. Introduction to Graph and Hypergraph Theory. Textbook. Nova Science Publishers, 2009.
  • 187. Bujtas, Csilla and Tuza, Zsolt. Color-bounded hypergraphs, II: Interval hypergraphs and hypertrees. Discrete Math. 309 (2009), 6391–6401.
  • 186. Bujtas, Csilla and Tuza, Zsolt. Color-bounded hypergraphs, I: General results. Discrete Math. 309 (2009), no. 15, 4890–4902.
  • 185. L. Milazzo, Zs. Tuza. Logarithmic upper bound for the upper chromatic number of $S(t,t+1,v)$ systems. Ars Combin. 92 (2009), 213–223.

    2008

  • 184. T. Griggs, G. Lo Faro, G. Quattrocchi. On some colouring of 4-cycle systems with specified block colour patterns. Discrete Mathematics, Volume 308, Issues 2-3, 6 February 2008, Pages 465-478.
  • 183. G. Bacso, Zs. Tuza. Upper chromatic number of finite projective planes. J. Combin. Des. 16 (2008), no. 3, 221–230.
  • 182. Cs. Bujtas. Algorithms and structure: set partitions under local constraints. PhD Thesis. University of Pannonia, Veszprem, Hungary, 2008.
  • 181. V. Voloshin. Coloring theory: history, results and open problems. Combinatorics 2008, Costermano, (VR), Italy, 22-28 June, 2008, pp. 173 – 177.
  • 180. Zs. Tuza, V. Voloshin. Problems and results on colorings of mixed hypergraphs. Horizons of Combinatorics. (E. Gyori et al, eds.) Bolyai Society Mathematical Studies 17, Springer-Verlag, 2008, 235 – 255.
  • 179. G. Bacso, Cs. Bujtas, Zs. Tuza, V. Voloshin. New challenges in the theory of hypergraph coloring. Proc. Int. Conf. ICDM 2008, pp. 67–78.
  • 178. Cs. Bujtas, Zs. Tuza. Uniform Mixed Hypergraphs: The Possible Numbers of Colors. Graphs and Combinatorics, Volume 24 , Issue 1 (February 2008), Pages 1-12.

    2007

  • 177. L. Milazzo, Zs. Tuza. A class of Steiner Systems S(2,4,v) with arcs of extremal size. Tatra Mountains Mathematical Publications 36 (2007), 153–162.
  • 176. M. Gionfriddo, A. Amato. Colourings of Voloshin for $S\sb 2(2,3,v)$. Util. Math. 74 (2007), 19–32.
  • 175. A.D. Forbes, M.J. Grannell, T.S. Griggs. New type B colorable $S(2,4,v)$ designs. J. Combin. Des. 15 (2007), no. 4, 357–368.
  • 174. Gabor Bacso, Zsolt Tuza. Upper chromatic number of finite projective planes. Journal of Combinatorial Designs, Published Online: 4 Sep 2007.
  • 173. Ping Zhao, Kefeng Diao. On the Upper Chromatic Numbers of Mixed Interval Hypertrees. Lecture Notes in Computer Science, Springer Berlin / Heidelberg ISSN 0302-9743 (Print) 1611-3349 (Online), Volume 4381 (2007) 272-277.
  • 172. DIAO Ke-feng and ZHAO Ping. On the coloring of C-hypergraphs with minimum connected pair graphs.Chinese Journal of Organic Chemistry 2007- 42- 2:56-58.
  • 171. P. Johnson, V. Voloshin. Geombinatorial Mixed Hypergraph Coloring Problems. Geombinatorics, Vol XVII (2), 2007, 57-67.
  • 170. Cs. Bujtas, Zs. Tuza. Orderings of uniquely colorable hypergraphs. Discrete Applied Mathematics, 155 (2007) 1395-1407.
  • 169. Cs. Bujtas, Zs. Tuza. Color-bounded hypergraphs III: Model comparison. Applicable Analysis and Discrete Mathematics 1 (2007), 36-55.
  • 168. D. Kral. Mixed Hypergraphas and other coloring problems. Discrete Mathematics 307 (7-8) (2007), 923-938.

    2006

  • 167. J. Yu, K. Diao, G. Liu. The Minimum Edge Number of a 4-Uniform Co-Hypergraph. OPERATIONS RESEARCH TRANSACTIONS, 2006, Vol. 10, No. 1, p. 95-98 (in Chinese).
  • 166. K. Diao, G. Liu, D. Rautenbach, P. Zhao. A note on the least number of edges of 3-uniform hypergraphs with upper chromatic number 2. Discrete Math. 306 (2006), no. 7, 670–672.
  • 165. Cs. Bujtas, Zs. Tuza. Mixed colorings of hypergraphs. Electronic Notes in Discrete Mathematics, 24 (2006), 273-275.
  • 164. D. Kral, J. Kratochvil, A. Proskurowski, H.-J. Voss. Coloring mixed hypertrees. Discrete Applied Mathematics 154(4): 660-672 (2006).
  • 163. V.Voloshin. Coloring Mixed Hypergraphs: from Combinatorics to Philosophy. In: LE MATEMATICHE Vol. LIX (2004)-Fasc. I-II, pp. 393-402. Palermo, 2006.
  • 162. V.Voloshin, H.-J. Voss. Circular mixed hypergraphs II:The upper chromatic number. Discrete Applied Mathematics, Volume 154, Issue 8 , 15 May 2006, Pages 1157-1172.

    2005

  • 161. V.Voloshin. Problem 2. C-hypergraph perfection. Discrete Applied Mathematics 154 (2006) 604 – 607.
  • 160. Amato, Alberto(I-CATN-MI), Colourings of Voloshin for $ATS(v)$. (English summary) Matematiche (Catania) 57 (2002), no. 2, 275–286 (2005).
  • 159. G. Lo Faro, A. Tripodi. Strict colourings of STS(3v)s and uncolourable BSTS(3v)s, Discrete Math. 1 (301) (2005) 117-123.
  • 158. K. Roblee, V. Voloshin. About the upper chromatic number of mixed hypertree. Computer Science Journal of Moldova, Vol.13, No.2 (38), 2005, pp.131-135.
  • 157. K. F. Diao, G. Liu. The Coloring Theory of Mixed Hypergraphs. ADVANCES IN MATHEMATICS 2005, Vol. 34, No. 2, P. 145-154.
  • 156. V. Voloshin. Coloring Block Designs as Mixed Hypergraphs: survey. Abstracts of papers presented to the American Mathematical Society. Volume 26, Number 1, Issues 139, 2005, p.15, abstract 1003-05-129, Atlanta, Georgia, January 5-8, 2005.

    2004

  • 155. K. Diao, J. Yu. A sufficient condition for a C-perfect C-hypergraph. JOURNAL OF SHANDONG UNIVERSITY (NATURAL SCIENCE), 2004, Vol. 39 No. 3 P. 6-9.
  • 154. K. Diao, G. Liu. Bounds on minimum C-edge number of 4-uniform C-hypergraphs. MATHEMATICA APPLICATA, Vol. 17, No. 4, 2004, p. 1-6.
  • 153. L. Gionfriddo. Construction of ${\rm BP}\sb 3$-designs with mononumerical spectrum. Util. Math. 65 (2004), 201–218.
  • 152. D. Kral. On feasible sets of mixed hypergraphs. Electron. J. Combin. 11 (2004), Research Paper 19, 14 pp.
  • 151. D. Kral, J. Kratochvil, H.-J. Voss. Mixed hypercacti. Discrete Math. 286 (2004), no. 1-2, 99–113.
  • 150. P. Adams, D. Bryant, J. Lefevre, M. Waterhouse. Some equitably 3-colourable cycle decompositions. Discrete Math. 284 (2004), no. 1-3, 21–35
  • 149.A. Rosa. Blocking sets and colourings in Steiner Systems S(2,4,v). Abstracts of the 12th Italian Conference “Combinatorics 2004”, Acireale, Capomulini, September 13-18, 2004.
  • 148. A. Amato, M. Gionfriddo. Bicolourings for S2(2,3,v). Abstracts of the 12th Italian Conference “Combinatorics 2004”, Acireale, Capomulini, September 13-18, 2004.
  • 147. H. Gropp. Colourings of configurations as mixed hypergraphs. Abstracts of the 12th Italian Conference “Combinatorics 2004”, Acireale, Capomulini, September 13-18, 2004.
  • 146. V. Voloshin. Coloring Mixed Hypergraphs: from Combinatorics to Philosophy. Abstracts of the 12th Italian Conference “Combinatorics 2004”, Acireale, Capomulini, September 13-18, 2004.
  • 145. M. Gionfriddo, G. Quattrocchi. Colouring 4-cycle systems with equitably coloured blocks, Discrete Mathematics, 284 (2004) 137-148.
  • 144. D. Kral. On maximum face-constrained coloring of plane graphs with no short face cycles. Discrete Math. 277 (2004), no. 1-3, 301–307.
  • 143. M. Gionfriddo, L. Milazzo, A. Rosa, V. Voloshin. Bicoloring Steiner systems S(2,4,v). Discrete Mathematics, 283 (2004) 249-253.
  • 142. G. Lo Faro, A. Tripodi. Triplication for BSTSs and uncolourability. Discrete Mathematics, 284 (2004) 197-203.
  • 141. J. Gross, J Yellen (Eds). Handbook of Graph Theory. CRC, 2004 (in section “Hypergraph Coloring”).
  • 140. L. Gionfriddo. Voloshin’s colourings of P3-designs. Discrete Mathematics, Volume 275, Issues 1-3 , 28 January 2004, Pages 137-149.
  • 139. Zhao, P., Diao, K. F. A problem on minimum number of edges and colorings for $\scr C$-hypergraphs.(Chinese) Qufu Shifan Daxue Xuebao Ziran Kexue Ban 30 (2004), no. 2, 33–36.

    2003

  • 138. P. Danziger, E. Mendelsohn. Bicolour graphs of Steiner triple systems. Discrete Math. 261 (2003), no. 1-3, 157–176.
  • 137. M. Gionfriddo. Colourings of hypergraphs and mixed hypergraphs. Rendiconti del Seminario Matematico di Messina. Serie II, Tomo XXV, Volume n.9 (2003), pages 87-98. Proceedings of the International Symposium on Graphs, Designs and Applications. Villa Pace, Messina, 30 September – 4 October, 2003.
  • 136. V. Voloshin. Coloring Mixed Hypegraphs: some results and open problems. Rendiconti del Seminario Matematico di Messina. Serie II, Tomo XXV, Volume n.9 (2003), pages 237-244. Proceedings of the International Symposium on Graphs, Designs and Applications. Villa Pace, Messina, 30 September – 4 October, 2003.
  • 135. D. Kral’ Mixed Hypergraphs and Other Coloring Problems. ITI report 2003-160; postscript.zip (116K, 30p).
  • 134. C.J. Colbourn, A. Rosa. Specialized Block-Colourings of Steiner Triple Systems and the Upper Chromatic Index. Graphs and Combinatorics, Volume 19, Number 3, Pages 335 – 345.
  • 133. M. Greig, A. Rosa. Maximal arcs in Steiner systems S(2,4,v). Discrete Mathematics, 267 (2003) 143 – 151.
  • 132. Zs. Tuza, V. Voloshin. Linear-time algorithm for the edge-colorability. Comput. Sci. J. Moldova, V.11, N.1(31), 2003, pp. 35-42.
  • 131. D. Kral’, J. Kratochvil, H.-J. Voss. Mixed hypergraphs with bounded degree: edge-coloring of mixed multigraphs. Theoretical Computer Science, Volume 295, Issues 1-3 , 24 February 2003, Pages 263-278.
  • 130. L. Milazzo, Zs. Tuza, V. Voloshin. Strict colorings of Steiner triple and quadruple systems: a survey. Discrete Mathematics, 261 (2003), 399-411.
  • 129.G. Bacso, Zs. Tuza, V. Voloshin. Unique colorings of bi-hypergraphs, Australas. J. Combin. 27 (2003) 33-45.
  • 128. D. Kral’. A counter-example to Voloshin’s hypergraph co-perfectness conjecture. Australas. J. Combin. 27, (2003), p.25.
  • 127. L. Gionfriddo. Nesting of G-designs. Ph.D. Thesis, University of Catania, 2003 (in Italian).
  • 126. Diao, K. F., Liu, G. Z., Zhao P. Totally irregular embedding of co-hypergraphs. (Chinese) Gongcheng Shuxue Xuebao 20 (2003), no. 3, 111–116.

    2002

  • 125. V.I. Voloshin. Coloring Mixed Hypergraphs: theory, algorithms and applications. AMS, Providence, 2002.
  • 124. Z. Dvorak, J. Kara, D. Kral, O. Pangrac. Complexity of Pattern Coloring of Cycle Systems. In: L. Kucera (Ed.): WG 2002, LNCS 2573, pp. 164–175, 2002. Springer-Verlag Berlin Heidelberg 2002
  • 123. L. Gionfriddo. P(3)-designs with gaps in the chromatic spectrum. Rendiconti Seminario Matematico Universita Messina 8 (2002), 49-58.
  • 122. A. Kundgen, R. Ramamurthi. Coloring face-hypergraphs of graphs on surfaces. J. Combin. Theory Ser. B 85 (2002), no. 2, 307–337.
  • 121. S. Milici. Colouring Steiner triple systems. Rendiconti Seminario Matematico Universita Messina 8 (2002), 113-118.
  • 120. A. Tripodi. A survey on strict colourings for a class of STS(3v)s. Rendiconti Seminario Matematico Universita Messina 8 (2002), 207-214.
  • 119. V.I.Voloshin. Problem # 10976. The American Mathematical Monthly, Vol. 109, No. 9, 2002.
  • 118. L. Gionfriddo, V. Voloshin. The smallest bihypergraph with a gap in the chromatic spectrum has 7 vertices and 9 edges. Bulletin of the ICA, Volume 36 (2002), 73-79.
  • 117. C. Arbib, M. Flammini. On the upper chromatic number of (v3,b2)-configurations. Discrete Applied Mathematics, 120 (2002) 3-12.
  • 116. A. Tripodi. Due problematiche classiche nella teoria degli ipergrafi e dei disegni: colorazioni e “intersection problem”. Ph.D. Thesis, University of Messina, 2002 (in Italian).
  • 115. T. Jiang, D. Mubayi, Zs. Tuza, V. Voloshin, D. West. The Chromatic Spectrum of Mixed Hypergraphs. Graphs and Combinatorics, 18 (2002) 309-318.
  • 114. Zs. Tuza, V. Voloshin, H. Zhou Uniquely colorable mixed hypegraphs. Discrete Mathematics, 248 (2002) 221-236.
  • 113.V.I. Voloshin, H.-J. Voss. Circular Mixed Hypergraphs II: The Upper Chromatic Number. Preprint TU Dresden, MATH-AL-2-2002, 1-26. Abstract on www.math.tu-dresden.de
  • 112. M. Gionfriddo, L. Milazzo, V. Voloshin. On the upper chromatic index of a multigraph. Comput. Sci. J. Moldova, V.10, N.1(28), 2002, pp.81-91.
  • 111.D. Lozovanu, V. Voloshin, A. Zelikovsky. A note on the colorability of a mixed hypergraph using k colors. Comput. Sci. J. Moldova, , V.10, N.1(28), 2002, pp.92-95.
  • 110. Kral D.: A Counter-Example to Voloshin’s Hypergraph Co-perfectness Conjecture, preprint, KAM-DIMATIA Series 2002-547.
  • 109. Kral D.: On Maximum Face-Constrained Coloring of Plane Graphs of Girth at least 5, preprint, KAM-DIMATIA Series 2002-545.
  • 108. Dvorak Z., Kara J., Kral. D., Pangrac O.: On Pattern Coloring of Cycle Systems, preprint, KAM-DIMATIA Series 2002-548.
  • 107. Diao, Ke Feng; Zheng, Qing Yu. The upper chromatic number of the Cartesian product of co-hypergraphs. (Chinese. English, Chinese summary) Math. Appl. (Wuhan) 15 (2002), suppl., 5–8.

    2001

  • 106. A. Niculitsa, V.Voloshin, H.-J. Voss. Circular and uniquely colorable mixed hypergraphs. Electronic Notes in Discrete Mathematics Volume 8, May 2001, Pages 115-118.
  • 105. J. Kratochvil. Gap-freeness of feasible sets of mixed hypergraphs. In J. Kara, D. Kral (Eds.), Graph Theory Day IV. KAM-DIMATIA series 2001-522, Prague, 2001, p. 11.
  • 104. M. Gionfriddo, L. Milazzo, V. Voloshin. On the upper chromatic index of a multigraph. Preprint of Catania University, (2001) (ps,282k).
  • 103. S. Milici, A. Rosa, V. Voloshin. Colouring Steiner systems with specified block colour pattern. Discrete Math., 240 (2001) 145-160.
  • 102. Dvorak Z., Kral. D.: On Planar Mixed Hypergraphs, Electronic Journal on Combinatorics, vol. 8 (1), #R35, 2001.
  • 101. G. Quattrocchi. Colouring 4-cycle Systems with Specified Block Colour Patterns: the Case of Embedding P3-designs. Electron. J. Combin. 8(1) (2001) R24.
  • 100. L. Gionfriddo. Extremal gaps in BP_3 designs. Comput. Sci. J. Moldova 9 (3) (2001), 305–320.
  • 99. Kral D.: On Complexity of Colouring Mixed Hypertrees, Proceedings 13th International Symposium, Fundamentals of Computation Theory, 1st Workshop on Efficient Algorithms, Lecture Notes in Computer Science vol. 2138, p. 516-524, Springer-Verlag, 2001
  • 98. Kral D., Kratochvil J., Voss H.-J.: Complexity Note on Mixed Hypergraphs, Proceedings 26th International Symposium, Mathematical Foundations of Computer Science 2001, Lecture Notes in Computer Science vol. 2136, p. 474-486, Springer-Verlag, 2001.
  • 97. Kral D., Kratochvil J., Voss H.-J.: Complexity Note on Mixed Hypergraphs, preprint, MATH-AL 6-2001, TU Dresden.
  • 96. Kral D., Kratochvil J., Voss H.-J.: Complexity Note on Mixed Hypergraphs, preprint, ITI report 2001-023.
  • 95.D. Kral, J. Kratochvil, H.-J. Voss: Mixed Hypergraphs with Bounded Degree: Edge–Coloring of Mixed Multigraphs, to appear in the special volume of Theoretical Computer Science from MFCS 2001.
  • 94. Kral D., Kratochvil J., Voss H.-J.: Mixed Hypercacti, preprint, KAM-DIMATIA Series 2001-535.
  • 93. Kral D., Kratochvil J., Voss H.-J.: Mixed Hypercacti, preprint, ITI report 2001-032.
  • 92. Kral D.: On Feasible Sets of Mixed Hypergraphs, preprint, KAM-DIMATIA Series 2001-540.
  • 91. M. Buratti, M. Gionfriddo, L. Milazzo, V. Voloshin. Lower and upper chromatic numbers for BSTSs(2^h – 1).Comput. Sci. J. Moldova, Vol. 9, No 2, (2001), 259-272.
  • 90. V.I. Voloshin. Coloring Mixed Hypergraphs: theory, algorithms and applications. In: Mathematical Society of the Republic of Moldova – UNESCO. First Conference of the Mathematical Society of the Republic of Moldova. Abstracts. Chisinau (2001), p.155.
  • 89. V. Prisacaru. The coloring properties of conformal acyclic mixed hypergraphs. In: Mathematical Society of the Republic of Moldova – UNESCO. First Conference of the Mathematical Society of the Republic of Moldova. Abstracts. Chisinau (2001), p. 123-124.
  • 88. V.I. Voloshin. Greedy algorithms for the lower and upper chromatic numbers, in: Combinatorics, Computability and Logic, (C.S. Calude, M.J. Dinneen, S. Sburlan, eds.), Proceedings of DMTCS’01, Springer-Verlag, London (2001), 241-251.
  • 87. D. Kobler, A. Kundgen. Gaps in the chromatic spectrum of face-constrained plane graphs. Electron. J. Combin. 8 (1) (2001) N3.
  • 86. G. Lo Faro, L. Milazzo, A. Tripodi. On the Upper and Lower Chromatic Numbers of BSQSs(16). Electron. J. Combin. 8(1) (2001) R6.
  • 85. M. Gionfriddo, L.Milazzo, V.Voloshin. On the upper chromatic index of a graph. DCCG Workshop, Lethbridge, July 9-14, 2001. Abstracts. Page 11.

    2000

  • 84. Zs. Tuza. Extremal bi-Helly families. Discrete Math. 213 (2000) 321–331.
  • 83. G. Lo Faro, L. Milazzo, A. Tripodi. The first BSTS with different upper and lower chromatic numbers.Australas. J. Combin. 22 (2000), 123–133.
  • 82. E.M. Li Marzi. Strict colorings for classes of 4-cycle systems. III International Conference in “Stochastic Geometry, Convex Bodies and Empirical Measures”, Part I (Mazara del Vallo, 1999). Rend. Circ. Mat. Palermo (2) Suppl. No. 65, part I (2000), 201–218 (in Italian) .
  • 81. K. Diao, P. Zhao, H. Zhou. About the upper chromatic number of a co-hypergraph. Discrete Math. 220 (1-3) (2000), 67–73.
  • 80. A. Niculitsa, H.-J. Voss. A characterization of uniquely colorable mixed hypergraphs of order n with upper chromatic numbers n-1 and n-2. Australas. J. Combin. 21 (2000), 167–177.
  • 79. E.M. Li Marzi, M.C. Marino. On planar mixed hypergraphs. Comput. Sci. J. Moldova 8 (3) (2000), 247–259.
  • 78. A. Niculitsa. Structure of some classes of uc mixed hypergraphs. Ph.D. Thesis, Moldova State University, Chisinau (2000) (in Romanian).
  • 77. V. Prisakaru. Methods of investigation of chromatic properties of hypergraphs. Ph.D. Thesis, Moldova State University, Chisinau (2000) (in Romanian).
  • 76. A. Kundgen, E. Mendelsohn, V. Voloshin. Colouring of planar mixed hypergraphs. Electron. J. Combin. 7 (2000), R60.
  • 75. Zs. Tuza, V. Voloshin. Uncolorable mixed hypergraphs. Discrete Applied Mathematics, 99 (2000) 209-227.
  • 74. Kral D., Kratochvil J., Proskurowski A., Voss H.-J.: Coloring mixed hypertrees, Proceedings 26th Workshop on Graph-Theoretic Concepts in Computer Science, Lecture Notes in Computer Science vol. 1928, p. 279-289, Springer-Verlag, 2000.
  • 73. Kral D., Kratochvil J., Proskurowski A., Voss H.-J.: Coloring mixed hypertrees, preprint, MATH-AL 8-2000, TU Dresden.
  • 72. Kral D., Kratochvil J., Proskurowski A., Voss H.-J.: Coloring mixed hypertrees, preprint, ITI report 2000-003.
  • 71. A. Niculita. Caracterizarea structurii unor clase de hipergrafe mixte unic colorabile. Institutul de cercetari stiintifice in domeniul informatiei tehnico-stiintifice; Certificat de depunere a manuscrisului Nr. 1773-M2000, 10 p.
  • 70. A. Niculitsa. Some clases of mixed hypergraphs uniquely colorable with two colors. Scientific Annals, Faculty of Mathematics and Informatics, State University of Moldova, 2000, Vol.II, Nr. 1, p. 3-9.
  • 69. A. Niculitsa and V. Voloshin. About uniquely colorable mixed hypertrees. Discussione Mathematicae: Graph Theory. Vol. 20, No. 1, 2000, pp. 81-91.
  • 68. D. Lozovanu, V. Voloshin. Integer programming models for colorings of mixed hypergraphs. Computer Science Journal of Moldova, Vol.8, No 1 (22), 2000, p. 64–74.
  • 67. V. Prisacaru. About the mixed hypergraph coloring. Preceedings of the Tiberiu Popoviciu Itinerant Seminar of Functional Equations, Approximation and Convexity, pp. 193-196, Editura SRIMA, Cluj-Napoca, 2000.
  • 66. V. Prisacaru. The upper cromatic number of a co-hypergraph. Conferinta corpului didactico- -stiintific a USM pe anii 1998-99, pp.75-76, Chishinau, 2000.
  • 65. V.I. Voloshin, H.-J. Voss. Circular Mixed hypergraphs I: colorability and unique colorability. Proceedings of the Thirty-first Southeastern International Conference on Combinatorics, Graph Theory and Computing (Boca Raton, FL, 2000). Congr. Numer. 144 (2000), 207–219.
  • 64. V. Voloshin, H.-J. Voss. Circular Mixed hypergraphs I : colorability and unique colorability. Preprint Inst. of Algebra MATH-AL-3-2000, Technische Universitat Dresden, 2000.
  • 63. V. Voloshin and H.-J. Voss The upper chromatic number of circular mixed hypergraphs. KAM Series, Discrete Mathematics-Combinatorics, Operations Research-Optimization (Seventh Prague Combinatorial Workshop) 495 (2000), 26 – 28.
  • 62. T. Jiang. Structural and extremal problems in graph theory. Ph.D. Thesis. University of Illinois, Urbana, 2000.
  • 61. Diao, Ke Feng; Zhang, Chun Guo; Zheng, Qing Yu. The upper chromatic numbers of a class of Steiner triple systems. (Chinese) Qufu Shifan Daxue Xuebao Ziran Kexue Ban 26 (2000), no. 1, 21–23.

    1999

  • 60. C.Arbib. A primal-dual property of the upper chromatic number of mixed hypergraphs. Electronic Notes in Discrete Mathematics, Volume 3 (1999).
  • 59. J. Kratochvil, Zs. Tuza, M. Voigt. New trends in the theory of graph coloring: choosability and list coloring.DIMACS Series to Discrete Mathematics and Theoretical Computer Science. Volume 49, 1999, p.183-197, (sect. 8.4. Mixed hypergraphs: list colorings without lists).
  • 58. Ch. Colbourn, J. Dinitz and A. Rosa. Bicoloring Steiner Triple Systems. Electron. J. Combin. 6 (1999), R25.
  • 57. Ch.J. Colbourn, A. Rosa. Triple Systems. Clarendon Press, Oxford, 1999 (section 18.6. Strict colorings and the upper chromatic number, p. 340-341).
  • 56. M.C. Marino. Colorings of maximal planar bi-hypergraphs. Rendiconti del Seminario Matematico di Messina, Serie II – Tomo XX, supplementato al n.5, Atti del 5th Workshop on Combinatorics, Messina 8-10 November, 1999, p. 91-106.
  • 55. L. Milazzo. Colorazioni strette per sistemi di Steiner di tipo STS e SQS. Rendiconti del Seminario Matematico di Messina, Serie II – Tomo XX, supplementato al n.5, Atti del 5th Workshop on Combinatorics, Messina 8-10 November, 1999, p. 107-118.
  • 54. V. Prisakaru. The upper chromatic number of a co-hypergraph. Rendiconti del Seminario Matematico di Messina, Serie II – Tomo XX, supplementato al n.5, Atti del 5th Workshop on Combinatorics, Messina 8-10 November, 1999, p. 129-148.
  • 53. R. Scapellato, V. Voloshin. Some results on coloring of mixed hypergraphs. Rendiconti del Seminario Matematico di Messina, Serie II – Tomo XX, supplementato al n.5, Atti del 5th Workshop on Combinatorics, Messina 8-10 November, 1999, p. 149- 166.
  • 52. A. Tripodi. New results about strict colorings for small BSTSs and BSQSs. Rendiconti del Seminario Matematico di Messina, Serie II – Tomo XX, supplementato al n.5, Atti del 5th Workshop on Combinatorics, Messina 8-10 November, 1999, p. 181-190.
  • 51. V. Voloshin and H. Zhou. Pseudo-chordal mixed hypergraphs. Discrete Math., 202 (1999) 239-248.
  • 50. V. Voloshin. Upper chromatic number and C-perfect mixed hypergraphs. Paul Erdos and his Mathematics. Research Communications of the conference held in the memory of Paul Erdos, Budapest, Hungary, July 4-11, 1999, p. 267-269.
  • 49. A. Niculitsa and V. Voloshin. About uniquely colorable mixed hypertrees. Preprint MATH-AL-7-1999, Technische Universitat Dresden, 1999.
  • 48. A. Niculitsa, V. Voloshin, H.-J. Voss. Uniquely colorable and circular mixed hypergraphs. 6th Twente Workshop on Graphs and Combinatorial Optimization, 26-28 May, 1999, H.J. Broersma, U.Faigle and J.L. Hurink (eds.). University of Twente, May, 1999, 173-176. Electronic Notes in Discrete Mathematics, Vol. 8 (2001).
  • 47. A. Niculitsa, V. Voloshin, H.-J.Voss. Circular and uniquely colorable mixed hypergarphs. Scientific Annals, Faculty of Mathematics and Informatics, State University of Moldova, 1999, p. 131-136.
  • 46. A. Niculitsa, H.-J. Voss. About uniquely colorable mixed hypergraphs. Congressus Numerantium 136 (1999), p. 33 – 42.
  • 45. T. Jiang, D. Mubayi, Zs. Tuza, V. Voloshin and D.B. West, Chromatic spectrum is broken. 6th Twente Workshop on Graphs and Combinatorial Optimization, 26-28 May, 1999, H.J. Broersma, U.Faigle and J.L. Hurink (eds.). University of Twente, May, 1999, 231–234. Electronic Notes in Discrete Mathematics, Vol. 3 (1999).

    1998

  • 44. L. Milazzo, Zs. Tuza. Strict Colourings for Classes of Steiner Triple Systems. Discrete Math., 182 (1998) 233-243.
  • 43. A. Naso. Grafi – ipergrafi – sistemi di m-cicli e colorazioni. Tesi di Laurea (M.S. Thesis). University of Messina, 1998.
  • 42. A. Niculita. Caracterizarea structurii unor clase de hipergrafe mixte. Conferinta corpului didactico-stiintific “Bilantul activitatii stiintifice a USM pe anii 1996-1997”, 30 sept.- 5 oct. 1998, Rezumatele comunicarilor, Stiinte naturale, Chisinau USM, 1998, p. 53.
  • 41. S. Lizzio. Greedy algorithm for the upper chromatic number. Tesi di Laurea (M.S. Thesis). Catania University, 1998.
  • 40. V. Prisakaru. About the coloring of an arbitrary co-hypergraph. Conferinta corpului didactico-stiintific a USM pe anii 1996-97, p.46, Chishinau, 1998.
  • 39. V. Voloshin. Colorings of Mixed Hypergraphs. Abstract 60. Twenty-Ninth Southeastern International Conference on Combinatorics, Graph Theory and Computing. March 9-13, 1998. Program and Abstracts.
  • 38. E. Flocos. Elaboration of methods and algorithms for coloring of some special classes of mixed hypergraphs. Ph.D. Thesis, Moldova State University (1998) (in Romanian).

    1997

  • 37. V. Prisakaru. The upper chromatic number of quasi-interval co-hypergraphs, Le Mathematiche, Vol. LII (1997) – Fasc.II, pp. 237-260.
  • 36. V. Prisakaru. Coloring quasi-interval co-hypergraphs. Anale stiintifice ale USM, Stiinte reale. Chisinau, 1997, p. 52-58.
  • 35. V. Prisakaru. The upper chromatic number and the chromatic classes of a hypergraph. Abstract at the confernce ”Optimal Discrete Structures and Algorithms. (ODSA-97), Rostock, 1997.
  • 34. E. Bulgaru, V.I. Voloshin. Mixed Interval Hypergraphs, Discrete Applied Mathematics, 77 (1997) 29-41.
  • 33. Zs. Tuza, V. Voloshin. Uncolorable Mixed Hypergraphs. 5th Twente Workshop on Graphs and Combinatorial Optimization, 18-20 May, 1997, U.Faigle and C.Hoede (eds.). University of Twente, May, 1997, 231-234.
  • 32. E. Flocos. Proprietati cromatice ale co-monostelelor. Buletinul Academiei de Stiinte a RM, Matematica. Chisinau, 1997, No 3, p.8-19.
  • 31. E. Flocos. The upper chromatic number of simple co-monostars. Anale stiintifice ale USM, Stiinte reale. Chisinau, 1997, p.22-27.
  • 30. L.Milazzo. The monochromatic block number, Discrete Mathematics, 165 – 166 (1997), 487–496.
  • 29. L. Milazzo, Zs. Tuza, Upper Chromatic Number of Steiner Triple and Quadruple Systems. Discrete Math., 174 (1997), 247-259.
  • 28. V. Miagkov. The r-uniform chordal conformal co-perfect hypergraphs. M.S. Thesis, Moldova State University (1997), (in Russian).
  • 27. I. Murovannaia. About some properties of mixed hypergraph coloring. M.S. Thesis, Moldova State University, (1997) (in Russian).

    1996

  • 26. L. Milazzo. Sul numero cromatico superiore nei sistemi di Steiner., Ph.D. Thesis, University of Catania, (1996).
  • 25. V. Prisakaru. The coloring algorithm for quasi-interval co-hypergraphs. Conferinta stiintifica jubiliara 2-3 octombrie 1996, p.12-14, Chisinau, 1996.
  • 24. V. Prisakaru. Upper chromatic number of a quasi-interval co-hypergraph. Seminarul itinerant ”Tiberiu Popoviciu”, p.143-145, Cluj-Napoca, 1996.
  • 23. V. Voloshin. Three questions to biologists. International Colloquium on Combinatorics and Graph Theory. July 15-20, 1996. Abstracts. Balatonlelle, Hungary, p.39.
  • 22. V. Voloshin. About colorings, greedy strategy and maximal life time. l Seminarul itinerant “Tiberiu Popoviciu” de ecuatii functionale, aproximare si convexitate. Cluj-Napoca, 21-25 Mai, 1996, p.161-164.
  • 21. E. Flocos. Proprietati ale co-monostelelor. Abstract, International Conference on mathematics and Informatics. Chisinau, 1996, September 19-21, p.70-71.
  • 20. M.F. Mammana. On the upper edge-colorings for Steiner Systems. Journal of Combinatorics, Information and System Sciences. Vol.21, No.1, 81-86 (1996).
  • 19. M.C. Marino. Free Colorings of Distance s of a co-hypergraph. Journal of Combinatorics, Information and System Sciences. Vol.21,No.1,61-69 (1996).
  • 18. D. Malai. Coloring of co-hypertrees. M.S. Thesis. Moldova State University, 1996.
  • 17. V. Suman. Upper chromatic number of a co-hypergraph. M.S. Thesis. Moldova State University, 1996.

    1995

  • 16. V. Prisakaru. The coloring algorithm for the clique co-hypergraph of an interval graph. Seminarul itinerant ”Tiberiu Popoviciu”, Cluj-Napoca, 1995.
  • 15. V. Voloshin. Hypergraph Drawing and Optimization System. Atti Academia Peloritana dei Pericolanti Classe I di Scienze Fis. Mat. e Nat., Vol.LXXIII (1995), p.1-3.
  • 14. V.I. Voloshin. The bases of New Coloring Theory. 5eme Colloque International Graphes et Combinatoire, Marseille, Luminy, 3-8 September, 1995, p. 86.
  • 13. V.I. Voloshin. New Approach in Coloring Theory. 4th Twente Workshop on Graphs and Combinatorial Optimization, 7-9 June, 1995, U.Faigle and C.Hoede (eds.). University of Twente, May, 1995, 231-234.
  • 12. V.I. Voloshin. On the upper chromatic number of a hypergraph. Australasian Journal of Combinatorics, No.11, March, 1995, 25-45.
  • 11. V.I. Voloshin. Numarul chromatic superior al hipergrafurilor intervale mixte. Materialele conferintei corpului didactico-stiintific – bilantul activitatii stiintifice a U.S.M. pe anii 1993-1994, 20-27 martie 1995, Stiintele naturale. Chisinau – USM – 1995, p. 56.
  • 10. E. Flocos. Unele proprietati ale hipergrafelor intervale mixte. Bilantul activitatii stiintifice a USM pe anii 1993-1994. Chisinau, USM, 1995, p.56.
  • 9. L. Milazzo. On upper chromatic number for SQS(10) and SQS(16). Le Matematiche, Vol. L (1995) – Fasc. I, pp. 179-193, Catania.

    1994

  • 8. V.I. Voloshin. On the upper chromatic number of a hypergraph. Conference on Discrete and Computational Geometry, Mathematical Institute of the Hungarian Academy of Sciences, Budapest, May 30- June 3, 1994, p.19-20.
  • 7. V.I. Voloshin. On the upper chromatic number of a hypergraph and related problems. An International Conference on Incidence Geometries and Combinatorial Structures COMBINATORICS’94, Roma, Montesilvano (PE), 10-16 September, 1994, p.91.
  • 6. E. Bulgaru, V.I. Voloshin. Mixed Interval Hypergraphs. Technical Report Gerhard-Mercator-Universitat – Gesamthochschule Duisburg SM-DU-259, 1994.
  • 5. V.I. Voloshin. A maximal lifetime of systems and co-perfect hypergraphs. Advances in Modelling and Analysis, A, AMSE Press, Vol.20, No 4, 1994, p.1-18.
  • 4. E. Bulgaru. Mixed interval hypergraphs. M.S. Thesis, Moldova State University, Kishinev, 1994.

    1993

  • 3. V.I. Voloshin. The mixed hypergraphs. Computer Science Journal of Moldova, Vol.1, No 1(1), 45-52, 1993.

    1992

  • 2. V.I. Voloshin. On the upper chromatic number of a hypergraph. Scientific research conference of Moldova State University. Theses of Reports, Kishinev, 1992, V.1, p.42.
  • 1. V.I. Voloshin. On the upper chromatic number of a hypergraph. Preprint of Moldova State University (1992).