1. Matrix multiplication via arithmetic progressions;Coppersmith;Proceedings of the 19th ACM Symposium on Theory of Computing,1987
2. On the chromatic number of geometric graphs;Erdös;Ars Combin.,1980
3. Polynomial algorithms for perfect graphs;Grötschel;Ann. Discrete Math.,2984
4. Relaxations of vertex packing;Grötschel;J. Combin. Theory Ser. B,1986
5. A physical interpretation of graph connectivity;Linial,1986