@article{GDZPPN002094495,
title = {Normalization of Differential Equations Defining a CR Structure.},
journal = {Inventiones mathematicae},
volume = {46},
year = {1978},
pages = {33-60},
zbl = {0389.32006},
url = {http://dml.mathdoc.fr/item/GDZPPN002094495}
}
Luk, Hing-Sun. Normalization of Differential Equations Defining a CR Structure.. Inventiones mathematicae, Tome 46 (1978) pp. 33-60. http://gdmltest.u-ga.fr/item/GDZPPN002094495/