%0 Journal Article
%A Halaš, Radomír
%A Hort, Daniel
%T A characterization of 1-, 2-, 3-, 4-homomorphisms of ordered sets
%J Czechoslovak Mathematical Journal
%D 2003
%P 213-221
%V 53
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMJ_2003__53_1_a16/
%G en
%F CMJ_2003__53_1_a16