%0 Journal Article
%A G. V. Nenashev
%T An upper bound on the chromatic number of circle graphs without $K_4$
%J Zapiski Nauchnykh Seminarov POMI
%D 2011
%P 149-156
%V 391
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ZNSL_2011_391_a6/
%G ru
%F ZNSL_2011_391_a6