1. Difference Equations and Inequalities;Agarwal,1992
2. Advanced Topics in Difference Equations;Agarwal,1997
3. Criteria for an exponential dichotomy of difference equations;Papaschinopoulos;Czechoslovak Math. J.,1985
4. First order difference system-existence and uniqueness;Murty,1997
5. J. Hong and C. Núñez, On the almost periodic type difference equations, Math. Comp. Mod. (to appear).