%0 Journal Article %A G. S. Rychkov %T A complete investigation of the number of limit cycles of the equation $(b_{10}x+y)dy=\sum_{i+j\ge1}^2a_{ij}x^iy^jdx$ %J Differencialʹnye uravneniâ %D 1970 %P 2193-2199 %V 6 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_12_a7/ %G ru %F DE_1970_6_12_a7