The index of a singular point of the equation $y'=\frac{P_4(x,y)}{Q_4(x,y)}$
Differencialʹnye uravneniâ, Tome 13 (1977) no. 3, pp. 463-467
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@article{DE_1977_13_3_a8,
author = {P. T. Cherevichny},
title = {The index of a singular point of the equation $y'=\frac{P_4(x,y)}{Q_4(x,y)}$},
journal = {Differencialʹnye uravneni\^a},
pages = {463--467},
year = {1977},
volume = {13},
number = {3},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/DE_1977_13_3_a8/}
}
P. T. Cherevichny. The index of a singular point of the equation $y'=\frac{P_4(x,y)}{Q_4(x,y)}$. Differencialʹnye uravneniâ, Tome 13 (1977) no. 3, pp. 463-467. http://geodesic.mathdoc.fr/item/DE_1977_13_3_a8/