%0 Journal Article
%A Berman, David M.
%T Critical Graphs for Acyclic Colorings
%J Canadian mathematical bulletin
%D 1978
%P 115-116
%V 21
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1978-018-x/
%R 10.4153/CMB-1978-018-x
%F 10_4153_CMB_1978_018_x