@article{GDZPPN00233402X, title = {Rigidity of CR submanifolds and analyticity of CR immersions.}, journal = {Mathematische Annalen}, volume = {287}, year = {1990}, pages = {229-238}, zbl = {0676.32004}, url = {http://dml.mathdoc.fr/item/GDZPPN00233402X} }
Han, Chong-Kyu. Rigidity of CR submanifolds and analyticity of CR immersions.. Mathematische Annalen, Tome 287 (1990) pp. 229-238. http://gdmltest.u-ga.fr/item/GDZPPN00233402X/