%0 Journal Article
%A V. A. Doiber
%A A. V. Kostochka
%A H. Sachs
%T A~very short proof of Dirac's theorem on the number of edges in chromatically critical graphs
%J Diskretnyj analiz i issledovanie operacij
%D 1996
%P 28-34
%V 3
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DA_1996_3_4_a1/
%G ru
%F DA_1996_3_4_a1