Safonova, Inna N., and Vasilly G. Safonov. 2020. “On Some Properties of the Lattice of Totally σ-Local Formations of Finite Groups”. Journal of the Belarusian State University. Mathematics and Informatics, no. 3 (December): 6-16. https://doi.org/10.33581/2520-6508-2020-3-6-16.