%0 Journal Article
%A Haviar, Alfonz
%A Nedela, Roman
%T On varieties of graphs
%J Discussiones Mathematicae. Graph Theory
%D 1998
%P 209-223
%V 18
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DMGT_1998_18_2_a7/
%G en
%F DMGT_1998_18_2_a7