%0 Journal Article
%A Kratochvíl, Jan
%A Matoušek, Jiří
%T NP-hardness results for intersection graphs
%J Commentationes Mathematicae Universitatis Carolinae
%D 1989
%P 761-773
%V 30
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1989__30_4_a18/
%G en
%F CMUC_1989__30_4_a18