@article{05237452,
title = {Unbounded perturbations of nonlinear second-order difference equations at resonance.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2007},
year = {2007},
doi = {10.1155/2007/96415},
zbl = {1154.39010},
language = {en},
url = {http://dml.mathdoc.fr/item/05237452}
}
Ma, Ruyun. Unbounded perturbations of nonlinear second-order difference equations at resonance.. Advances in Difference Equations [electronic only], Tome 2007 (2007) . doi : 10.1155/2007/96415. http://gdmltest.u-ga.fr/item/05237452/