%0 Journal Article
%A N. P. Khomenko
%A V. G. Leshchenko
%T Planarity of coverings of graphs
%J Diskretnaya Matematika
%D 1991
%P 103-113
%V 3
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DM_1991_3_2_a8/
%G ru
%F DM_1991_3_2_a8