@article{05629310,
title = {Existence of periodic and almost periodic solutions of abstract retarded functional difference equations in phase spaces.},
journal = {Advances in Difference Equations [electronic only]},
volume = {2009},
year = {2009},
doi = {10.1155/2009/380568},
zbl = {1177.39017},
language = {en},
url = {http://dml.mathdoc.fr/item/05629310}
}
Vidal, Claudio. Existence of periodic and almost periodic solutions of abstract retarded functional difference equations in phase spaces.. Advances in Difference Equations [electronic only], Tome 2009 (2009) . doi : 10.1155/2009/380568. http://gdmltest.u-ga.fr/item/05629310/