%0 Journal Article %A Auger, David %A Charon, Irène %A Hudry, Olivier %A Lobstein, Antoine %T On the existence of a cycle of length at least 7 in a (1,≤ 2)-twin-free graph %J Discussiones Mathematicae. Graph Theory %D 2010 %P 591-609 %V 30 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DMGT_2010_30_4_a5/ %G en %F DMGT_2010_30_4_a5