%0 Journal Article
%A F. A. Berezin
%T The number of closed nonselfintersecting contours on a~planar lattice
%J Sbornik. Mathematics
%D 1971
%P 47-63
%V 14
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/item/SM_1971_14_1_a2/
%G en
%F SM_1971_14_1_a2