1. Graphes;Berge,1983
2. Aggregation of inequalities in integer programming;Chvátal;Annals Discrete Math.,1977
3. V. Chvátal, C.T. Hoang, N.V.R. Mahadev and D. de Werra, Four classes of perfectly orderable graphs (submitted for publication).
4. Perfectly ordered graphs;Chvátal,1984
5. Split graphs having Dilworth number two;Foldes;Canad. J. Math.,1977