2 citations to https://www.mathnet.ru/rus/jsfu443

1. Azam Abdurakhimovich Imomov, Erkin Egamberdievich Tukhtaev, “On asymptotic structure of critical Galton-Watson branching processes allowing immigration with infinite variance”, Stochastic Models, 39:1 (2023), 118  
2. Azam A. Imomov, Erkin E. Tukhtaev, Applied Modeling Techniques and Data Analysis 2, 2021, 185