TY  - JOUR
AU  - Fumio Ichikawa
TI  - On Finite Determinacy of Formal Vector Fields.
JO  - Inventiones mathematicae
PY  - 1982
SP  - 45
EP  - 52
VL  - 70
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1982__70_142968/
ID  - IM_1982__70_142968
ER  -