1. D. S. Passman, “Groups with normal solvable Hall p′-subgroups,” Trans. Amer. Math. Soc. 123(1), 99–111 (1966).
2. V. I. Zenkov, “Intersections of nilpotent subgroups in finite groups,” Fundament. Prikl. Mat. 2(1), 1–92 (1996).
3. S. Dolfi, “Large orbits in coprime actions of solvable groups,” Trans. Amer. Math. Soc. 360(1), 135–152 (2008).
4. E. P. Vdovin, “Regular orbits of solvable linear p′-groups,” Sib. Elektron. Mat. Izv. 4, 345–360 (2007).
5. V. I. Zenkov, “On intersections of solvable Hall subgroups in finite nonsolvable groups,” Proc. Steklov Inst. Math., 259(Suppl.), S250–S253 (2007).