%0 Journal Article
%A D. V. sirotkin
%T Theorems of existence and sufficiency connected with local transformations of graphs for the $k$-colourability problem
%J Žurnal Srednevolžskogo matematičeskogo obŝestva
%D 2017
%P 98-104
%V 19
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SVMO_2017_19_2_a8/
%G ru
%F SVMO_2017_19_2_a8