%0 Journal Article %A V. V. Tsegel'nik %T Analytical properties of solutions of some systems of ordinary differential equations and their applications %J Differencialʹnye uravneniâ %D 1994 %P 992-997 %V 30 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1994_30_6_a8/ %G ru %F DE_1994_30_6_a8