@article{05701498, title = {Resonance and nonresonance periodic value problems of first-order differential systems.}, journal = {Discrete Dynamics in Nature and Society}, volume = {2010}, year = {2010}, doi = {10.1155/2010/863193}, zbl = {1194.34033}, language = {en}, url = {http://dml.mathdoc.fr/item/05701498} }
Zhang, Fengqin; Yan, Jurang. Resonance and nonresonance periodic value problems of first-order differential systems.. Discrete Dynamics in Nature and Society, Tome 2010 (2010) . doi : 10.1155/2010/863193. http://gdmltest.u-ga.fr/item/05701498/