1. The perfectly matchable subgraph polytope of a bipartite graph;Balas;Networks,1983
2. On a routing problem;Bellman;Quart. Appl. Math.,1958
3. deren Sämtliche bzw. deren ungerade Kreise starr sind;Berge,1961
4. Graphs and Hypergraphs;Berge,1973
5. A property of the k-optimal partitions;Berge,1984