1.
Combinatorial Optimization and Applications : 5th International Conference, COCOA 2011, Zhan...
by Wang, Weifan, Zhu, Xuding, ...
ISBN: 9783642226151
List Price: $107.00
2.
Combinatorial Nullstellensatz : With Applications to Graph Colouring
by Balakrishnan, R., Zhu, Xuding
ISBN: 9780367687014