In view of Nevanlinna theory, we study the properties of meromorphic solutions of systems of a class of complex difference equations. Some results obtained improve and extend the previous theorems given by Gao.
"Some Properties of Meromorphic Solutions of Systems of Complex q-Shift Difference Equations." Abstr. Appl. Anal. 2013 1 - 6, 2013. https://doi.org/10.1155/2013/680956