%0 Journal Article %A V. P. Zhukov %T Some properties of solutions of a class of systems of nonlinear differential equations %J Differencialʹnye uravneniâ %D 1984 %P 349-351 %V 20 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_2_a21/ %G ru %F DE_1984_20_2_a21