@article{GDZPPN002111187,
title = {The Neumann problem for elliptic equations with non-smooth coefficients.},
journal = {Inventiones mathematicae},
volume = {114},
year = {1993},
pages = {447-510},
zbl = {0807.35030},
url = {http://dml.mathdoc.fr/item/GDZPPN002111187}
}
Kenig, Carlos E.; Pipher, Jill. The Neumann problem for elliptic equations with non-smooth coefficients.. Inventiones mathematicae, Tome 114 (1993) pp. 447-510. http://gdmltest.u-ga.fr/item/GDZPPN002111187/