@article{GDZPPN002098679,
title = {A Construction of Normal Forms for Weakly Pseudoconvex CR Manifolds in ...2.},
journal = {Inventiones mathematicae},
volume = {69},
year = {1982},
pages = {311-330},
zbl = {0495.32007},
url = {http://dml.mathdoc.fr/item/GDZPPN002098679}
}
Wong, Philip P. A Construction of Normal Forms for Weakly Pseudoconvex CR Manifolds in ...2.. Inventiones mathematicae, Tome 69 (1982) pp. 311-330. http://gdmltest.u-ga.fr/item/GDZPPN002098679/