2 citations to https://www.mathnet.ru/rus/jmsny2

1. A. L. Yakymiv, “Some properties of regularly varying functions and series in the orthant”, Springer Proc. Math. Statist., 358 (2021), 373–385      
2. Arsen L. Yakymiv, “Local Limit Theorem for the Multiple Power Series Distributions”, Mathematics, 8:11 (2020), 2067–8