В. И. Зенков, “О пересечениях трех нильпотентных подгрупп в конечной группе”, Сиб. матем. журн., 62:4 (2021), 764–783 ; V. I. Zenkov, “Intersections of three nilpotent subgroups in a finite group”, Siberian Math. J., 62:4 (2021), 621–637
Anton A. Klyachko, Natalia M. Luneva, “Invariant systems of representatives, or the cost of symmetry”, Discrete Mathematics, 344:6 (2021), 112361
Vdovin E.P., “The number of subgroups with trivial unipotent radicals in finite groups of Lie type”, Journal of Group Theory, 7:1 (2004), 99–112