@article{05243014,
title = {Maximum principle and existence of positive solutions for nonlinear systems involving degenerate },
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2007},
year = {2007},
zbl = {1137.35322},
language = {en},
url = {http://dml.mathdoc.fr/item/05243014}
}
Khafagy, Salah A.; Serag, Hassan M. Maximum principle and existence of positive solutions for nonlinear systems involving degenerate . Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2007 (2007) . http://gdmltest.u-ga.fr/item/05243014/