%0 Journal Article %A Dirac, G.A. %T Note on the Structure of Graphs %J Canadian mathematical bulletin %D 1962 %P 221-227 %V 5 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1962-021-8/ %R 10.4153/CMB-1962-021-8 %F 10_4153_CMB_1962_021_8