TY  - JOUR
AU  - Hing-Sun Luk
TI  - Normalization of Differential Equations Defining a CR Structure.
JO  - Inventiones mathematicae
PY  - 1978
SP  - 33
EP  - 60
VL  - 48
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1978__48_142583/
ID  - IM_1978__48_142583
ER  -