Kudratov, Kh., and Ya. Khusanbaev. “Some Limit Theorems for the Critical Galton–Watson Branching Processes”. Ukrains’kyi Matematychnyi Zhurnal 75, no. 4 (May 10, 2023): 467–477. Accessed April 11, 2025. https://umj.imath.kiev.ua/index.php/umj/article/view/6781.