1. Graphs and Hypergraphs;Berge,1973
2. On covering the points of a graph with point disjoint paths;Boesch,1973
3. Properties of graphs with constraints on degrees;Bondy;Studia Sci. Math. Hungar.,1969
4. N-Hamiltonian graphs;Chartrand;J. Combin. Theory,1970
5. On Hamilton's ideals;Chvátal;J. Combin. Theory,1972