%0 Journal Article
%A Hell, Pavol
%A Nešetřil, Jaroslav
%T Universality of directed graphs of a given height
%J Archivum mathematicum
%D 1989
%P 47-54
%V 25
%N 1-2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/ARM_1989__25_1-2_a6/
%G en
%F ARM_1989__25_1-2_a6