@article{GDZPPN002110598,
title = {A generalized complex Hopf Lemma and its applications to CR mappings.},
journal = {Inventiones mathematicae},
volume = {114},
year = {1993},
pages = {331-348},
zbl = {0781.32021},
url = {http://dml.mathdoc.fr/item/GDZPPN002110598}
}
Preiss Rothschild, Linda; Bouendi, M.S. A generalized complex Hopf Lemma and its applications to CR mappings.. Inventiones mathematicae, Tome 114 (1993) pp. 331-348. http://gdmltest.u-ga.fr/item/GDZPPN002110598/