%0 Journal Article %A A. N. Berlinskii %T A qualitative investigation of the differential equation $\frac{dy}{dx}=\frac{y+a_0x^2+a_1xy+a_2y^2}{x+b_0x^2+b_1xy+b_2y^2}$ %J Differencialʹnye uravneniâ %D 1966 %P 353-360 %V 2 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1966_2_3_a6/ %G ru %F DE_1966_2_3_a6