TY  - JOUR
AU  - A. F. Andreev
TI  - On the number of operations used in Frommer's method for investigation of a singular point of a differential equation
JO  - Differencialʹnye uravneniâ
PY  - 1965
SP  - 1155
EP  - 1176
VL  - 1
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1965_1_9_a3/
LA  - ru
ID  - DE_1965_1_9_a3
ER  -