%0 Journal Article %T On Adjacency Preserving Maps %J Canadian mathematical bulletin %D 1974 %P 403-405 %V 17 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1974-074-7/ %R 10.4153/CMB-1974-074-7 %F 10_4153_CMB_1974_074_7