Xuding Zhu

Wai Hong Chan, Wai Chee Shiu, Pak Kiu Sun, Xuding Zhu: The strong game colouring number of directed graphs. Discrete Mathematics 313(10): 1070-1077 (2013)

D. J. Guan, Ko-Wei Lih, Xuding Zhu: Preface: optimization in graphs. J. Comb. Optim. 25(4): 499-500 (2013)

Frédéric Havet, Xuding Zhu: The game Grundy number of graphs. J. Comb. Optim. 25(4): 752-765 (2013)

Gerard Jennhwa Chang, Daphne Der-Fen Liu, Xuding Zhu: A short proof for Chen's Alternative Kneser Coloring Lemma. J. Comb. Theory, Ser. A 120(1): 159-163 (2013)

Yu-Chang Liang, Xuding Zhu: Anti-magic labelling of Cartesian product of graphs. Theor. Comput. Sci. 477: 1-5 (2013)

R. Balakrishnan, R. B. Bapat, Sandi Klavzar, A. Vijayakumar, Thomas Zaslavsky, Xuding Zhu: Preface. Discrete Mathematics 312(9): 1493 (2012)

Po-Yi Huang, Tsai-Lien Wong, Xuding Zhu: Weighted-1-antimagic graphs of prime power order. Discrete Mathematics 312(14): 2162-2169 (2012)

Hal A. Kierstead, Chung-Ying Yang, Daqing Yang, Xuding Zhu: Adapted game colouring of graphs. Eur. J. Comb. 33(4): 435-445 (2012)

Po-Yi Huang, Tsai-Lien Wong, Xuding Zhu: Application of polynomial method to on-line list colouring of graphs. Eur. J. Comb. 33(5): 872-883 (2012)

Tsai-Lien Wong, Jiaojiao Wu, Xuding Zhu: Total weight choosability of Cartesian product of graphs. Eur. J. Comb. 33(8): 1725-1738 (2012)

Mickaël Montassier, Patrice Ossona de Mendez, André Raspaud, Xuding Zhu: Decomposing a graph into forests. J. Comb. Theory, Ser. B 102(1): 38-52 (2012)

Tsai-Lien Wong, Xuding Zhu: Antimagic labelling of vertex weighted graphs. Journal of Graph Theory 70(3): 348-350 (2012)

Jiangxu Kong, Weifan Wang, Xuding Zhu: The surviving rate of planar graphs. Theor. Comput. Sci. 416: 65-70 (2012)

Ákos Seress, Tsai-Lien Wong, Xuding Zhu: Distinguishing labeling of the actions of almost simple groups. Combinatorica 31(4): 489-506 (2011)

Francesca Fiorenzi, Pascal Ochem, Patrice Ossona de Mendez, Xuding Zhu: Thue choosability of trees. Discrete Applied Mathematics 159(17): 2045-2049 (2011)

Min Chen, André Raspaud, Nicolas Roussel, Xuding Zhu: Acyclic 4-choosability of planar graphs. Discrete Mathematics 311(1): 92-101 (2011)

Xuding Zhu: The fractional version of Hedetniemi's conjecture is true. Eur. J. Comb. 32(7): 1168-1175 (2011)

André Raspaud, Xuding Zhu: Circular flow on signed graphs. J. Comb. Theory, Ser. B 101(6): 464-479 (2011)

Weifan Wang, Xuding Zhu: Entire colouring of plane graphs. J. Comb. Theory, Ser. B 101(6): 490-501 (2011)

Tsai-Lien Wong, Xuding Zhu: Total weight choosability of graphs. Journal of Graph Theory 66(3): 198-212 (2011)

Daphne Der-Fen Liu, Serguei Norine, Zhishi Pan, Xuding Zhu: Circular consecutive choosability of k-choosable graphs. Journal of Graph Theory 67(3): 178-197 (2011)

Edita Mácajová, André Raspaud, Michael Tarsi, Xuding Zhu: Short cycle covers of graphs and nowhere-zero flows. Journal of Graph Theory 68(4): 340-348 (2011)

Jaroslaw Grytczuk, Jakub Przybylo, Xuding Zhu: Nonrepetitive list colourings of paths. Random Struct. Algorithms 38(1-2): 162-173 (2011)

Weifan Wang, Xubin Yue, Xuding Zhu: The surviving rate of an outerplanar graph for the firefighter problem. Theor. Comput. Sci. 412(8-10): 913-921 (2011)

Ross Churchley, Jing Huang, Xuding Zhu: Complexity of Cycle Transverse Matching Problems. IWOCA 2011: 135-143

Weifan Wang, Xuding Zhu, Ding-Zhu Du (Eds.): Combinatorial Optimization and Applications - 5th International Conference, COCOA 2011, Zhangjiajie, China, August 4-6, 2011. Proceedings. Lecture Notes in Computer Science 6831, Springer 2011, isbn 978-3-642-22615-1

Jakub Kozik, Piotr Micek, Xuding Zhu: Towards on-line Ohba's conjecture. CoRR abs/1111.5458 (2011)

Daqing Yang, Xuding Zhu: Game Colouring Directed Graphs. Electr. J. Comb. 17(1) (2010)

Gerard J. Chang, Jiaojiao Wu, Xuding Zhu: Rainbow domination on trees. Discrete Applied Mathematics 158(1): 8-12 (2010)

Mickaël Montassier, Arnaud Pêcher, André Raspaud, Douglas B. West, Xuding Zhu: Decomposition of sparse graphs, with application to game coloring number. Discrete Mathematics 310(10-11): 1520-1523 (2010)

Nicolas Roussel, Xuding Zhu: Total coloring of planar graphs of maximum degree eight. Inf. Process. Lett. 110(8-9): 321-324 (2010)

Mickaël Montassier, André Raspaud, Xuding Zhu: Decomposition of sparse graphs into two forests, one having bounded maximum degree. Inf. Process. Lett. 110(20): 913-916 (2010)

Wensong Lin, Daphne Der-Fen Liu, Xuding Zhu: Multi-coloring the Mycielskian of graphs. Journal of Graph Theory 63(4): 311-323 (2010)

Leizhen Cai, Weifan Wang, Xuding Zhu: Choosability of toroidal graphs without short cycles. Journal of Graph Theory 65(1): 1-15 (2010)

Arnaud Pêcher, Xuding Zhu: Claw-free circular-perfect graphs. Journal of Graph Theory 65(2): 163-172 (2010)

Zhishi Pan, Xuding Zhu: Multiple Coloring of Cone Graphs. SIAM J. Discrete Math. 24(4): 1515-1526 (2010)

Xuding Zhu: On-Line List Colouring of Graphs. Electr. J. Comb. 16(1) (2009)

Xuding Zhu: Bipartite density of triangle-free subcubic graphs. Discrete Applied Mathematics 157(4): 710-714 (2009)

Tsai-Lien Wong, Xuding Zhu: Distinguishing labeling of group actions. Discrete Mathematics 309(6): 1760-1765 (2009)

Hungyung Chang, Xuding Zhu: Colouring games on outerplanar graphs and trees. Discrete Mathematics 309(10): 3185-3196 (2009)

Wensong Lin, Xuding Zhu: Circular game chromatic number of graphs. Discrete Mathematics 309(13): 4495-4501 (2009)

Louis Esperet, Xuding Zhu: Game colouring of the square of graphs. Discrete Mathematics 309(13): 4514-4521 (2009)

Xuding Zhu: Colouring graphs with bounded generalized colouring number. Discrete Mathematics 309(18): 5562-5568 (2009)

Albert Guan, Xuding Zhu: Adaptable choosability of planar graphs with sparse short cycles. Discrete Mathematics 309(20): 6044-6047 (2009)

Pavol Hell, Zhishi Pan, Tsai-Lien Wong, Xuding Zhu: Adaptable chromatic number of graph products. Discrete Mathematics 309(21): 6153-6159 (2009)

Mickaël Montassier, André Raspaud, Xuding Zhu: An upper bound on adaptable choosability of graphs. Eur. J. Comb. 30(2): 351-355 (2009)

Xuding Zhu: Bipartite subgraphs of triangle-free subcubic graphs. J. Comb. Theory, Ser. B 99(1): 62-83 (2009)

Louis Esperet, Mickaël Montassier, Xuding Zhu: Adapted list coloring of planar graphs. Journal of Graph Theory 62(2): 127-138 (2009)

Hal A. Kierstead, Bojan Mohar, Simon Spacapan, Daqing Yang, Xuding Zhu: The Two-Coloring Number and Degenerate Colorings of Planar Graphs. SIAM J. Discrete Math. 23(3): 1548-1560 (2009)

Hamed Hatami, Xuding Zhu: The Fractional Chromatic Number of Graphs of Maximum Degree at Most Three. SIAM J. Discrete Math. 23(4): 1762-1775 (2009)

Serguei Norine, Xuding Zhu: Circular Degree Choosability. Electr. J. Comb. 15(1) (2008)

Jiaojiao Wu, Xuding Zhu: Lower bounds for the game colouring number of partial k-trees and planar graphs. Discrete Mathematics 308(12): 2637-2642 (2008)

Daphne Der-Fen Liu, Xuding Zhu: Coloring the Cartesian sum of graphs. Discrete Mathematics 308(24): 5928-5936 (2008)

Jiaojiao Wu, Xuding Zhu: The 6-relaxed game chromatic number of outerplanar graphs. Discrete Mathematics 308(24): 5974-5980 (2008)

Pavol Hell, Xuding Zhu: On the adaptable chromatic number of graphs. Eur. J. Comb. 29(4): 912-921 (2008)

Zhishi Pan, Xuding Zhu: Minimal circular-imperfect graphs of large clique number and large independence number. Eur. J. Comb. 29(4): 1055-1063 (2008)

Daqing Yang, Xuding Zhu: Activation strategy for asymmetric marking games. Eur. J. Comb. 29(5): 1123-1132 (2008)

Daphne Der-Fen Liu, Xuding Zhu: Fractional chromatic number of distance graphs generated by two-interval sets. Eur. J. Comb. 29(7): 1733-1743 (2008)

Xuding Zhu: Refined activation strategy for the marking game. J. Comb. Theory, Ser. B 98(1): 1-18 (2008)

Douglas B. West, Xuding Zhu: Circular chromatic index of Cartesian products of graphs. Journal of Graph Theory 57(1): 7-18 (2008)

Serguei Norine, Tsai-Lien Wong, Xuding Zhu: Circular choosability via combinatorial Nullstellensatz. Journal of Graph Theory 59(3): 190-204 (2008)

Xuding Zhu: Game coloring the Cartesian product of graphs. Journal of Graph Theory 59(4): 261-278 (2008)

Alexandr V. Kostochka, Xuding Zhu: Adapted List Coloring of Graphs and Hypergraphs. SIAM J. Discrete Math. 22(1): 398-408 (2008)

Sandi Klavzar, Xuding Zhu: Cartesian powers of graphs can be distinguished by two labels. Eur. J. Comb. 28(1): 303-310 (2007)

Arnaud Pêcher, Xuding Zhu: Claw-free circular-perfect graphs. Electronic Notes in Discrete Mathematics 29: 451-455 (2007)

Gerard J. Chang, Hung-Lin Fu, Xuding Zhu: Editorial note. J. Comb. Optim. 14(2-3): 111-112 (2007)

Tomás Kaiser, Daniel Král, Riste Skrekovski, Xuding Zhu: The circular chromatic index of graphs of high girth. J. Comb. Theory, Ser. B 97(1): 1-13 (2007)

André Raspaud, Xuding Zhu: List circular coloring of trees and cycles. Journal of Graph Theory 55(3): 249-265 (2007)

Tomasz Bartnicki, Jaroslaw Grytczuk, Hal A. Kierstead, Xuding Zhu: The Map-Coloring Game. The American Mathematical Monthly 114(9): 793-803 (2007)

Jiaojiao Wu, Xuding Zhu: Relaxed game chromatic number of outer planar graphs. Ars Comb. 81 (2006)

Xuding Zhu, Shuyuan Lin: Uniquely circular colourable and uniquely fractional colourable graphs of large girth. Contributions to Discrete Mathematics 1(1) (2006)

Arnaud Pêcher, Xuding Zhu: On the circular chromatic number of circular partitionable graphs. Journal of Graph Theory 52(4): 294-306 (2006)

Arnaud Pêcher, Annegret Wagler, Xuding Zhu: Three classes of minimal circular-imperfect graphs. Electronic Notes in Discrete Mathematics 19: 9-15 (2005)

Daphne Der-Fen Liu, Xuding Zhu: Coloring the Cartesian Sum of Graphs. Electronic Notes in Discrete Mathematics 22: 305-309 (2005)

Zhishi Pan, Xuding Zhu: Graphs of Large Girth with Prescribed Partial Circular Colourings. Graphs and Combinatorics 21(1): 119-129 (2005)

Xuding Zhu: Circular perfect graphs. Journal of Graph Theory 48(3): 186-209 (2005)

Xuding Zhu: Circular choosability of graphs. Journal of Graph Theory 48(3): 210-218 (2005)

Daphne Der-Fen Liu, Xuding Zhu: Erratum to: "Fractional chromatic number and circular chromatic number for distance graphs with large clique size" Journal of Graph Theory 47(2) 2004, 129-146. Journal of Graph Theory 48(4): 329-330 (2005)

Peyman Afshani, Mahsa Ghandehari, Mahya Ghandehari, Hamed Hatami, Ruzbeh Tusserkani, Xuding Zhu: Circular chromatic index of graphs of maximum degree 3. Journal of Graph Theory 49(4): 325-335 (2005)

Daphne Der-Fen Liu, Xuding Zhu: Circular Distance Two Labeling and the lambda-Number for Outerplanar Graphs. SIAM J. Discrete Math. 19(2): 281-293 (2005)

Daphne Der-Fen Liu, Xuding Zhu: Multilevel Distance Labelings for Paths and Cycles. SIAM J. Discrete Math. 19(3): 610-621 (2005)

Hong-Gwa Yeh, Xuding Zhu: Resource-sharing system scheduling and circular chromatic number. Theor. Comput. Sci. 332(1-3): 447-460 (2005)

Wenjie He, Jiaojiao Wu, Xuding Zhu: Relaxed game chromatic number of trees and outerplanar graphs. Discrete Mathematics 281(1-3): 209-219 (2004)

Mohammad Hosseini Dolama, Eric Sopena, Xuding Zhu: Incidence coloring of k-degenerated graphs. Discrete Mathematics 283(1-3): 121-128 (2004)

Hossein Hajiabolhassan, Xuding Zhu: Sparse H-Colourable Graphs of Bounded Maximum Degree. Graphs and Combinatorics 20(1): 65-71 (2004)

Jaroslav Nesetril, Xuding Zhu: On sparse graphs with given colorings and homomorphisms. J. Comb. Theory, Ser. B 90(1): 161-172 (2004)

Zhishi Pan, Xuding Zhu: Density of the circular chromatic numbers of series-parallel graphs. Journal of Graph Theory 46(1): 57-68 (2004)

Daphne Der-Fen Liu, Xuding Zhu: Fractional chromatic number and circular chromatic number for distance graphs with large clique size. Journal of Graph Theory 47(2): 129-146 (2004)

W. R. Chen, Frank K. Hwang, Xuding Zhu: Equivalence of the 1-Rate Model to the Classical Model on Strictly Nonblocking Switching Networks. SIAM J. Discrete Math. 17(3): 446-452 (2004)

Daphne Der-Fen Liu, Xuding Zhu: Circulant Distant Two Labeling and Circular Chromatic Number. Ars Comb. 69 (2003)

Chun-Yen Chou, Wei-Fan Wang, Xuding Zhu: Relaxed game chromatic number of graphs. Discrete Mathematics 262(1-3): 89-98 (2003)

Sheng-Chyang Liaw, Zhishi Pan, Xuding Zhu: Construction of K_n-minor free graphs with given circular chromatic number. Discrete Mathematics 263(1-3): 191-206 (2003)

Xuding Zhu: Circular chromatic numbers of a class of distance graphs. Discrete Mathematics 265(1-3): 337-350 (2003)

Ko-Wei Lih, Wei-Fan Wang, Xuding Zhu: Coloring the square of a K₄-minor free graph. Discrete Mathematics 269(1-3): 303-309 (2003)

Hong-Gwa Yeh, Xuding Zhu: 4-Colorable 6-regular toroidal graphs. Discrete Mathematics 273(1-3): 261-274 (2003)

Xuding Zhu: An Analogue of Hajós' Theorem for the Circular Chromatic Number (II). Graphs and Combinatorics 19(3): 419-432 (2003)

Hossein Hajiabolhassan, Xuding Zhu: Circular chromatic number of Kneser graphs. J. Comb. Theory, Ser. B 88(2): 299-303 (2003)

Zhishi Pan, Xuding Zhu: Construction of graphs with given circular flow numbers. Journal of Graph Theory 43(4): 304-318 (2003)

Hossein Hajiabolhassan, Xuding Zhu: Circular chromatic number of subgraphs. Journal of Graph Theory 44(2): 95-105 (2003)

Hossein Hajiabolhassan, Xuding Zhu: Circular chromatic number and Mycielski construction. Journal of Graph Theory 44(2): 106-115 (2003)

Claude Tardif, Xuding Zhu: The level of nonmultiplicativity of graphs. Discrete Mathematics 244(1-3): 461-471 (2002)

Zhishi Pan, Xuding Zhu: The circular chromatic number of series-parallel graphs of large odd girth. Discrete Mathematics 245(1-3): 235-246 (2002)

Frank K. Hwang, Xuding Zhu: Preface. Discrete Mathematics 253(1-3): 1- (2002)

Claude Tardif, Xuding Zhu: On Hedetniemi's conjecture and the colour template scheme. Discrete Mathematics 253(1-3): 77-85 (2002)

Zhishi Pan, Xuding Zhu: Tight relation between the circular chromatic number and the girth of series-parallel graphs. Discrete Mathematics 254(1-3): 393-404 (2002)

Daphne Der-Fen Liu, Xuding Zhu: Asymptotic Clique Covering Ratios of Distance Graphs. Eur. J. Comb. 23(3): 315-327 (2002)

Xuding Zhu: Circular Colouring and Orientation of Graphs. J. Comb. Theory, Ser. B 86(1): 109-113 (2002)

Xuding Zhu: Circular chromatic number of distance graphs with distance sets of cardinality 3. Journal of Graph Theory 41(3): 195-207 (2002)

Wenjie He, Xiaoling Hou, Ko-Wei Lih, Jiating Shao, Weifan Wang, Xuding Zhu: Edge-partitions of planar graphs and their game coloring numbers. Journal of Graph Theory 41(4): 307-317 (2002)

Xuding Zhu: Circular Chromatic Number of Planar Graphs of Large Odd Girth. Electr. J. Comb. 8(1) (2001)

Xuding Zhu: Circular chromatic number: a survey. Discrete Mathematics 229(1-3): 371-410 (2001)

Jaroslav Nesetril, Xuding Zhu: Construction of sparse graphs with prescribed circular colorings. Discrete Mathematics 233(1-3): 277-291 (2001)

Leizhen Cai, Xuding Zhu: Game chromatic index of k-degenerate graphs. Journal of Graph Theory 36(3): 144-155 (2001)

Gerard J. Chang, Xuding Zhu: Pseudo-Hamiltonian-connected graphs. Discrete Applied Mathematics 100(3): 145-153 (2000)

Xuding Zhu: The game coloring number of pseudo partial k-trees. Discrete Mathematics 215: 245-262 (2000)

Pavol Hell, Xuding Zhu: The circular chromatic number of series-parallel graphs. Journal of Graph Theory 33(1): 14-24 (2000)

Chihyun Chien, Xuding Zhu: The circular chromatic number of series-parallel graphs with large girth. Journal of Graph Theory 33(4): 185-198 (2000)

Xuding Zhu: Graphs Whose Circular Chromatic Number Equals the Chromatic Number. Combinatorica 19(1): 139-149 (1999)

Thomas Dinski, Xuding Zhu: A bound for the game chromatic number of graphs. Discrete Mathematics 196(1-3): 109-115 (1999)

Gerard J. Chang, Lingling Huang, Xuding Zhu: Circular chromatic numbers of Mycielski's graphs. Discrete Mathematics 205(1-3): 23-37 (1999)

Xuding Zhu: The Game Coloring Number of Planar Graphs. J. Comb. Theory, Ser. B 75(2): 245-258 (1999)

Gerard J. Chang, Daphne Der-Fen Liu, Xuding Zhu: Distance Graphs and T-Coloring. J. Comb. Theory, Ser. B 75(2): 259-269 (1999)

Xuding Zhu: Planar Graphs with Circular Chromatic Numbers between 3 and 4. J. Comb. Theory, Ser. B 76(2): 170-200 (1999)

Xuding Zhu: Construction of uniquely H-colorable graphs. Journal of Graph Theory 30(1): 1-6 (1999)

Xuding Zhu: A simple proof of Moser's theorem. Journal of Graph Theory 30(1): 19-26 (1999)

D. J. Guan, Xuding Zhu: Game chromatic number of outerplanar graphs. Journal of Graph Theory 30(1): 67-70 (1999)

Daphne Der-Fen Liu, Xuding Zhu: Distance graphs with missing multiples in the distance sets. Journal of Graph Theory 30(4): 245-259 (1999)

Ko-Wei Lih, Daphne Der-Fen Liu, Xuding Zhu: Star Extremal Circulant Graphs. SIAM J. Discrete Math. 12(4): 491-499 (1999)

Xuding Zhu: Chromatic Ramsey numbers. Discrete Mathematics 190(1-3): 215-222 (1998)

Gerard J. Chang, Lingling Huang, Xuding Zhu: Circular Chromatic Numbers and Fractional Chromatic Numbers of Distance Graphs. Eur. J. Comb. 19(4): 423-431 (1998)

Walter A. Deuber, Xuding Zhu: Relaxed Coloring of a Graph. Graphs and Combinatorics 14(2): 121-130 (1998)

Zoltán Füredi, Peter Horák, Chandra M. Pareek, Xuding Zhu: Minimal Oriented Graphs of Diameter 2. Graphs and Combinatorics 14(4): 345-350 (1998)

Xuding Zhu: Pattern Periodic Coloring of Distance Graphs. J. Comb. Theory, Ser. B 73(2): 195-206 (1998)

Hongbing Fan, Xuding Zhu: Oriented walk double covering and bidirectional double tracing. Journal of Graph Theory 29(2): 89-102 (1998)

D. J. Guan, Xuding Zhu: Multiple Capacity Vehicle Routing on Paths. SIAM J. Discrete Math. 11(4): 590-602 (1998)

Xuding Zhu: A note on graph reconstruction. Ars Comb. 46 (1997)

Huishan Zhou, Xuding Zhu: Multiplicativity of Acyclic Local Tournaments. Combinatorica 17(1): 135-145 (1997)

Walter A. Deuber, Xuding Zhu: The chromatic numbers of distance graphs. Discrete Mathematics 165-166: 195-204 (1997)

D. J. Guan, Xuding Zhu: A Coloring Problem for Weighted Graphs. Inf. Process. Lett. 61(2): 77-81 (1997)

Eckhard Steffen, Xuding Zhu: Star Chromatic Numbers of Graphs. Combinatorica 16(3): 439-448 (1996)

Pavol Hell, Jaroslav Nesetril, Xuding Zhu: Complexity of Tree Homomorphisms. Discrete Applied Mathematics 70(1): 23-36 (1996)

Guogang Gao, Xuding Zhu: Star-extremal graphs and the lexicographic product. Discrete Mathematics 152(1-3): 147-156 (1996)

Xuding Zhu: On the bounds for the ultimate independence ratio of a graph. Discrete Mathematics 156(1-3): 229-236 (1996)

Xuding Zhu: Uniquely H-colorable graphs with large girth. Journal of Graph Theory 23(1): 33-41 (1996)

Jaroslav Nesetril, Xuding Zhu: On bounded treewidth duality of graphs. Journal of Graph Theory 23(2): 151-162 (1996)

Walter A. Deuber, Xuding Zhu: Circular colorings of weighted graphs. Journal of Graph Theory 23(4): 365-376 (1996)

Xuding Zhu: A Polynomial Algorithm for Homomorphisms to Oriented Cycles. J. Algorithms 19(3): 333-345 (1995)

Pavol Hell, Huishan Zhou, Xuding Zhu: On homomorphisms to acyclic local tournaments. Journal of Graph Theory 20(4): 467-471 (1995)

Pavol Hell, Xuding Zhu: The Existence of Homomorphisms to Oriented Cycles. SIAM J. Discrete Math. 8(2): 208-222 (1995)

Pavol Hell, Xuding Zhu: Homomorphisms to oriented paths. Discrete Mathematics 132(1-3): 107-114 (1994)

Pavol Hell, Huishan Zhou, Xuding Zhu: Multiplicativity of Oriented Cycles. J. Comb. Theory, Ser. B 60(2): 239-253 (1994)

Pavol Hell, Huishan Zhou, Xuding Zhu: Homomorphisms to oriented cycles. Combinatorica 13(4): 421-433 (1993)

Xuding Zhu: A simple proof of the multiplicativity of directed cycles of prime power length. Discrete Applied Mathematics 36(3): 313-316 (1992)

Xuding Zhu: Star chromatic numbers and products of graphs. Journal of Graph Theory 16(6): 557-569 (1992)