%0 Journal Article %A D. D. Mirzov %T Zeros of solutions of a nonlinear differential system %J Differencialʹnye uravneniâ %D 1984 %P 1726-1732 %V 20 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1984_20_10_a9/ %G ru %F DE_1984_20_10_a9