1. Threshold characterization of graphs with Dilworth number two;Benzaken;J. Graph Theory,1985
2. Graphs and Hypergraphs;Berge,1976
3. Aggregation of inequalities in integer programming;Chvátal,1977
4. Graphs with prescribed degrees of vertices;Erdös;Mat. Lapok,1960
5. Flows in Networks;Ford,1962