@article{GDZPPN002102242,
title = {CR structures with group action and extendability of CR function.},
journal = {Inventiones mathematicae},
volume = {82},
year = {1985},
pages = {359-396},
zbl = {0598.32019},
url = {http://dml.mathdoc.fr/item/GDZPPN002102242}
}
Baouendi, M.S.; Rothschild, L.P. CR structures with group action and extendability of CR function.. Inventiones mathematicae, Tome 82 (1985) pp. 359-396. http://gdmltest.u-ga.fr/item/GDZPPN002102242/