%0 Journal Article %T On Cycles and Connectivity in Planar Graphs %J Canadian mathematical bulletin %D 1973 %P 283-288 %V 16 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1973-047-4/ %R 10.4153/CMB-1973-047-4 %F 10_4153_CMB_1973_047_4