1. Variations on the Hamiltonian theme;Bondy;Can. Math. Bull.,1972
2. Flip-flops in hypohamiltonian graphs;Chvátal;Can. Math. Bull.,1973
3. B. Grünbaum, Vertices missed by longest paths or circuits, to appear.
4. Graph Theory;Harary,1969
5. Recherche systématique des graphes hypohamiltoniens;Herz,1967