@article{VTAMU_2021_26_134_a1,
     author = {Yu. V. Gorbatova},
     title = {On permutable strongly $2$-maximal and strongly $3$-maximal subgroups},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {121--129},
     publisher = {mathdoc},
     volume = {26},
     number = {134},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2021_26_134_a1/}
}