@article{05312424,
title = {Multiplicity of positive periodic solutions of singular semipositone third-order boundary value problems.},
journal = {Boundary Value Problems [electronic only]},
volume = {2008},
year = {2008},
doi = {10.1155/2008/574842},
zbl = {1149.34016},
language = {en},
url = {http://dml.mathdoc.fr/item/05312424}
}
Sun, Yigang. Multiplicity of positive periodic solutions of singular semipositone third-order boundary value problems.. Boundary Value Problems [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/574842. http://gdmltest.u-ga.fr/item/05312424/