@ARTICLE{
author={Stevic Stevo,Alghamdi Mohammed Ali,Maturi Dalal A,Shahzad Naseer},
year={2014},
title={On the Periodicity of Some Classes of Systems of Nonlinear Difference Equations},
journal={ABSTRACT AND APPLIED ANALYSIS},
volume={},
number={},
pages={-},
document_type={Article},
} 

@ARTICLE{
author={Stevic Stevo,Alghamdi Mohammed Ali,Shahzad Naseer,Maturi Dalal A},
year={2013},
title={On a Class of Solvable Difference Equations},
journal={ABSTRACT AND APPLIED ANALYSIS},
volume={},
number={},
pages={-},
document_type={Article},
}