TY  - JOUR
AU  - V. V. Basov
TI  - A Generalized Normal Form and Formal Equivalence of Systems of Differential Equations with Zero Characteristic Numbers
JO  - Differencialʹnye uravneniâ
PY  - 2003
SP  - 154
EP  - 170
VL  - 39
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2003_39_2_a1/
LA  - ru
ID  - DE_2003_39_2_a1
ER  -