1. Problémes plaisants et delectables No. 29;Berge;Res Française Informat. Recherche Opérationelle,1963
2. Graphes et hypergraphics;Berge,1970
3. Variations on the hamiltonian theme;Bondy;Can. Math. Bull.,1972
4. Flip-flops in hypohamiltonian graph;Chvátal;Can. Math. Bull.,1973
5. New directions in hamiltonian graph theory;Chvátal,1973