1. Fitting, H. “Beiträge zur Theorie der Gruppen endlicher Ordnung”, Jahresber. Deutsch. Math.-Verein. 48, 77–141 (1938).
2. Murashka, V. I., Vasil’ev, A.F. “On the Products of Partially Subnormal Subgroups of Finite Groups”, Vestn. VGU 70 (4), 24–27 (2012) [in Russian].
3. Murashka, V. I., Vasil’ev, A. F. “On the Influence of the Fitting Subgroup on the Products of Finite Soluble Groups”, Probl. Fiz. Mat. Tech. 25, No. 4, 59–63 (2015).
4. Huppert, B., Blackburn, N. Finite Groups. III (Springer, Berlin–Heidelberg–New York, 1982).
5. Bender H. “On Groups with Abelian Sylow 2-Subgroups”, Math. Z. 117, 164–176 (1970).