%0 Journal Article %A Soukup, Lajos %T On chromatic number of product of graphs %J Commentationes Mathematicae Universitatis Carolinae %D 1988 %P 1-12 %V 29 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1988__29_1_a0/ %G en %F CMUC_1988__29_1_a0