To achieve this we first characterize all such graphs with exactly ..... Assume that S is a cubic component of H. By ... class of triangle-free cubic graph. ..... and Corollary 4.3.3(b) answers to a question given in [7] after Corollary 3 there. ..... 5.3. Hexagons and the Proof. Corollaries 5.2.10 and 5.2.11 give already quite strong ...
