%0 Journal Article %A A. A. Shishkin %T Asymptotic behavior of the solution of a singular nonlinear system of ordinary differential equations %J Differencialʹnye uravneniâ %D 1979 %P 444-457 %V 15 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1979_15_3_a8/ %G ru %F DE_1979_15_3_a8