Ilienko, M., and A. Polishchuk. “Convergence of Baum–Katz Series for Sums Whose Terms Are Elements of Linear $m$ Th Order Autoregressive Sequence”. Ukrains’kyi Matematychnyi Zhurnal 75, no. 9 (September 26, 2023): 1237–1247. Accessed December 5, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/7340.