%0 Journal Article %A P. T. Cherevichny %T Formulae for the computation of the index of a singular point of the equation $y'=\frac{P_3(x,y)}{Q_3(x,y)}$ in terms %J Differencialʹnye uravneniâ %D 1970 %P 1318-1319 %V 6 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_7_a22/ %G ru %F DE_1970_6_7_a22