%0 Journal Article %A IvanĨo, Jaroslav %T Some results on the Hadwiger numbers of graphs %J Mathematica slovaca %D 1988 %P 221-226 %V 38 %N 3 %U http://geodesic.mathdoc.fr/item/MASLO_1988_38_3_a3/ %G en %F MASLO_1988_38_3_a3