1. On the periodicity of the difference equation xn+1=α|xn|+βxn−1;Abu-Saris;J. Differ. Equations Appl.,1999
2. Characterization of rational periodic sequences;Abu-Saris;J. Differ. Equations Appl.,2000
3. Global behavior of rational sequences involving piecewise power function;Abu-Saris;J. Comput. Anal. Appl.,2000
4. On global periodicity of difference equations;Abu-Saris;J. Math. Anal. Appl.,2003
5. Characterization of rational periodic sequences II;Abu-Saris;J. Differ. Equations Appl.,2004