@article{05897799,
title = {Multiple periodic solutions for difference equations with double resonance at infinity.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2011},
year = {2011},
doi = {10.1155/2011/806458},
zbl = {1213.39016},
language = {en},
url = {http://dml.mathdoc.fr/item/05897799}
}
Zhang, Xiaosheng; Wang, Duo. Multiple periodic solutions for difference equations with double resonance at infinity.. Advances in Difference Equations [electronic only], Tome 2011 (2011) . doi : 10.1155/2011/806458. http://gdmltest.u-ga.fr/item/05897799/