1. Bauer, D., Broersma, H.J., Li, R., Veldman, H.J.: A generalization of a result of Häggkvist and Nicoghossian. J. Combin. Theory Ser. B 47, 237–243 (1989)
2. Bondy, J.A.: A remark on two sufficient conditions for Hamilton cycles. Discrete Math. 22, 191–193 (1978)
3. Bondy, J.A.: Basic graph theory - paths and cycles. Handbook of Combinatorics, Vol. I (Elsevier, Amsterdam, 1995) 5–110
4. Broersma, H.J., Li, H., Li, J., Tian, F., Veldman, H.J.: Cycles through subsets with large degree sum. Discrete Math. 171, 43–54 (1997)
5. Chvátal, V., Erdős, P.: A note on hamiltonian circuits. Discrete Math. 2, 111–113 (1972)