@article{GDZPPN002327945,
title = {Sobolev Estimates for the Lewy Operator on Weakly Pseudo-Convex Boundaries.},
journal = {Mathematische Annalen},
volume = {275},
year = {1986},
pages = {221-232},
zbl = {0588.32023},
url = {http://dml.mathdoc.fr/item/GDZPPN002327945}
}
Boas, Harold P.; Shaw, Mei-Chi. Sobolev Estimates for the Lewy Operator on Weakly Pseudo-Convex Boundaries.. Mathematische Annalen, Tome 275 (1986) pp. 221-232. http://gdmltest.u-ga.fr/item/GDZPPN002327945/