1. Ablowitz M, Halburd R G, Herbst B. On the extension of Painlevé property to difference equations. Nonlinearty, 2000, 13): 889–905
2. Bergweiier W, Langley J K. Zeros of differences of meromorphic functions. Math Proc Camb Phil Soc, 2007, 142): 133–147
3. Bergweiier W, Pang X C. On the derivative of meromorphic function with multiple zeros. J Math Anal Appl, 2003, 278): 285–292
4. Chen Z X. Fixed points of meromorphic functions and their differences, shifts. Annales Polonici Math, 2013, 109 (2): 153–163
5. Chen Z X, Shon K H. On existence of solutions of difference Riccati equation. Acta Math Sci, 2019, 39B (1): 1–9