TY  - JOUR
AU  - A. D. Bruno
TI  - The normal form of differential equations
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 1276
EP  - 1279
VL  - 157
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_157_6_a1/
LA  - ru
ID  - DAN_1964_157_6_a1
ER  -