@article{05637342,
title = {Existence of positive solutions for },
journal = {Discrete Dynamics in Nature and Society},
volume = {2009},
year = {2009},
doi = {10.1155/2009/189768},
zbl = {1182.34123},
language = {en},
url = {http://dml.mathdoc.fr/item/05637342}
}
Zhang, Ying; Qiao, Shidong. Existence of positive solutions for . Discrete Dynamics in Nature and Society, Tome 2009 (2009) . doi : 10.1155/2009/189768. http://gdmltest.u-ga.fr/item/05637342/