@article{05690826,
title = {Nonlinear discrete periodic boundary value problems at resonance.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2009},
year = {2009},
doi = {10.1155/2009/360871},
zbl = {1192.39004},
language = {en},
url = {http://dml.mathdoc.fr/item/05690826}
}
Ma, Ruyun; Ma, Huili. Nonlinear discrete periodic boundary value problems at resonance.. Advances in Difference Equations [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/360871. http://gdmltest.u-ga.fr/item/05690826/