@article{05848777, title = {Positive periodic solutions of nonlinear first-order functional difference equations.}, journal = {Discrete Dynamics in Nature and Society}, volume = {2010}, year = {2010}, doi = {10.1155/2010/419536}, zbl = {1208.39024}, language = {en}, url = {http://dml.mathdoc.fr/item/05848777} }
Ma, Ruyun; Chen, Tianlan; Lu, Yanqiong. Positive periodic solutions of nonlinear first-order functional difference equations.. Discrete Dynamics in Nature and Society, Tome 2010 (2010) . doi : 10.1155/2010/419536. http://gdmltest.u-ga.fr/item/05848777/