1. Polynomial algorithm to recognize a Meyniel graph;Burlet,1984
2. On rigid circuit graphs;Dirac;Abh. Math. Sem. Univ. Hamburg,1961
3. Transitiv orientierbare Graphen;Gallai;Acta Math. Acad. Sci. Hungar.,1967
4. Algorithms on clique separable graphs;Gavril;Discrete Math.,1977
5. Line graphs of bipartite graphs;Harary;Rev. Soc. Mat. Chile,1974