NikiforovaN. S. and KhusainovD. Y. (1999) “Stability of one difference equation with positive coefficients”, Ukrains’kyi Matematychnyi Zhurnal, 51(9), pp. 1276–1280. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4723 (Accessed: 27July2024).