Sufficient conditions in terms of the matrix measure for the periodicsolutions of a neutral type delay difference system\Delta[x (n) + cx (n - \tau)] = A(n; x (n)) x (n) + f (n; x (n - \tau)) are given.
@article{7488, title = {Periodic Solutions of a Neutral Difference System - doi: 10.5269/bspm.v22i2.7488}, journal = {Boletim da Sociedade Paranaense de Matem\'atica}, volume = {23}, year = {2009}, doi = {10.5269/bspm.v22i2.7488}, language = {EN}, url = {http://dml.mathdoc.fr/item/7488} }
Wang, Gen-Qiang; Cheng, Sui Sun. Periodic Solutions of a Neutral Difference System - doi: 10.5269/bspm.v22i2.7488. Boletim da Sociedade Paranaense de Matemática, Tome 23 (2009) . doi : 10.5269/bspm.v22i2.7488. http://gdmltest.u-ga.fr/item/7488/