TY - JOUR AU - A. N. Berlinskii TI - A qualitative investigation of the differential equation $\frac{dy}{dx}=\frac{y+a_0x^2+a_1xy+a_2y^2}{x+b_0x^2+b_1xy+b_2y^2}$ JO - Differencialʹnye uravneniâ PY - 1966 SP - 353 EP - 360 VL - 2 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1966_2_3_a6/ LA - ru ID - DE_1966_2_3_a6 ER -