Chen, Zong-Xuan, and Shuang-Ting Lan. “On the Growth of Meromorphic Solutions of Difference Equation”. Ukrains’kyi Matematychnyi Zhurnal 68, no. 11 (November 25, 2016): 1561-1570. Accessed February 28, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/1942.