%0 Journal Article
%A È. S. Shpigelman
%T The existence of regular solutions of a plane quadratic system
%J Differencialʹnye uravneniâ
%D 1979
%P 1835-1839
%V 15
%N 10
%I mathdoc
%U http://geodesic.mathdoc.fr/item/DE_1979_15_10_a10/
%G ru
%F DE_1979_15_10_a10