@article{05312436, title = {The existence and uniqueness of solution of Duffing equations with non-}, journal = {Boundary Value Problems [electronic only]}, volume = {2008}, year = {2008}, doi = {10.1155/2008/859461}, zbl = {1151.34308}, language = {en}, url = {http://dml.mathdoc.fr/item/05312436} }
Zhou, Ting; Huang, Wenhua. The existence and uniqueness of solution of Duffing equations with non-. Boundary Value Problems [electronic only], Tome 2008 (2008) . doi : 10.1155/2008/859461. http://gdmltest.u-ga.fr/item/05312436/