On stability of the hamiltonian index under contractions and closures.

Liming Xiong Zdenek Ryjácek Hajo Broersma On stability of the hamiltonian index under contractions and closures. 104-115 2005 49 Journal of Graph Theory 2 http://dx.doi.org/10.1002/jgt.20068 db/journals/jgt/jgt49.html#XiongRB05