%0 Journal Article
%A M. V. Dolov
%T Darboux integrals in the case of a focus
%J Differencialʹnye uravneniâ
%D 1978
%P 1173-1178
%V 14
%N 7
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1978_14_7_a2/
%G ru
%F DE_1978_14_7_a2