TY  - JOUR
AU  - Jih-Hsin Cheng
TI  - On the Curvature of CR-Structures and its Covariant Derivatives.
JO  - Mathematische Zeitschrift
PY  - 1987
SP  - 203
EP  - 210
VL  - 196
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZ_1987__196_173875/
ID  - MZ_1987__196_173875
ER  -