%0 Journal Article
%A G. V. Davydov
%A P. Yu. Suvorov
%T A~reduction of proposittional tautologihood to graph-coloring in three colors
%J Zapiski Nauchnykh Seminarov POMI
%D 1974
%P 10-13
%V 40
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_1974_40_a2/
%G ru
%F ZNSL_1974_40_a2