@article{05002728,
title = {On a variational approach to existence and multiplicity results for semipositone problems.},
journal = {Electronic Journal of Differential Equations (EJDE) [electronic only]},
volume = {2006},
year = {2006},
zbl = {1120.35307},
language = {en},
url = {http://dml.mathdoc.fr/item/05002728}
}
Costa, David G.; Tehrani, Hossein; Yang, Jianfu. On a variational approach to existence and multiplicity results for semipositone problems.. Electronic Journal of Differential Equations (EJDE) [electronic only], Tome 2006 (2006) . http://gdmltest.u-ga.fr/item/05002728/