TY  - JOUR
AU  - A. D. Bruno
TI  - On convergence of transforms of differential equations to the normal form
JO  - Doklady Akademii Nauk
PY  - 1965
SP  - 987
EP  - 989
VL  - 165
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1965_165_5_a1/
LA  - ru
ID  - DAN_1965_165_5_a1
ER  -