2 citations to https://www.mathnet.ru/rus/al925

1. Wenbin Guo, Danila O. Revin, Evgeny P. Vdovin, “The reduction theorem for relatively maximal subgroups”, Bull. Math. Sci., 12:01 (2022)  
2. Danila O. Revin, Andrei V. Zavarnitsine, “The behavior of $\pi$-submaximal subgroups under homomorphisms with $\pi$-separable kernels”, Сиб. электрон. матем. изв., 17 (2020), 1155–1164