1. Multimodularity, convexity, and optimization properties;Altman;Mathematics of Operations Research,2000
2. Discrete Event Control of Stochastic Networks: Multimodularity and Regularity;Altman,2003
3. On structures of bisubmodular polyhedra;Ando;Mathematical Programming,1996
4. A greedy algorithm for minimizing a separable convex function over a finite jump system;Ando;Journal of the Operations Research Society of Japan,1995
5. Decomposition of a signed graph into strongly connected components and its signed poset structure;Ando;Discrete Applied Mathematics,1996