%0 Journal Article %A Puš, Vladimír %T Chromatic number of products of graphs %J Commentationes Mathematicae Universitatis Carolinae %D 1988 %P 457-463 %V 29 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1988__29_3_a6/ %G en %F CMUC_1988__29_3_a6