We consider cubic graphs formed with k 2 disjoint claws Ci K1,3 (0 i k-1) such that for every integer i modulo k the three vertices of degree 1 of Ci are joined to the three vertices of degree 1 of Ci-1 and joined to the three vertices of degree 1
Jean-Luc Fouquet, Henri Thuillier, Jean-Marie Vanh