%0 Journal Article
%A M. V. Dolov
%T Limit cycles and algebraic integrals in the case of a center
%J Differencialʹnye uravneniâ
%D 1975
%P 1935-1941
%V 11
%N 11
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1975_11_11_a2/
%G ru
%F DE_1975_11_11_a2