@article{05676051,
title = {Gradient estimation of a },
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2010},
year = {2010},
zbl = {1186.35085},
language = {en},
url = {http://dml.mathdoc.fr/item/05676051}
}
Wang, Bei; Ma, Li. Gradient estimation of a . Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2010 (2010) . http://gdmltest.u-ga.fr/item/05676051/