@article{ADM_2020_29_1_a5,
     author = {V. N. Knyagina and V. S. Monakhov},
     title = {Finite groups with semi-subnormal {Schmidt} subgroups},
     journal = {Algebra and discrete mathematics},
     pages = {66--73},
     year = {2020},
     volume = {29},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2020_29_1_a5/}
}