Khar’kov, V. M. “Asymptotic Representations of One Class of Solutions of a Second-Order Difference Equation With Power Nonlinearity”. Ukrains’kyi Matematychnyi Zhurnal 61, no. 6 (June 25, 2009): 839-854. Accessed March 29, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/3062.