%0 Journal Article %A Zh. V. Zakharenko %A A. I. Yablonskii %T Qualitative investigation of a system of differential equations in the presence of an algebraic integral %J Differencialʹnye uravneniâ %D 1995 %P 759-764 %V 31 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1995_31_5_a3/ %G ru %F DE_1995_31_5_a3