%0 Journal Article %A S. K. Norkin %T On the asymptotics and structure of the integral $O$-set of a singular system. II %J Differencialʹnye uravneniâ %D 1986 %P 1086-1089 %V 22 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_6_a28/ %G ru %F DE_1986_22_6_a28