@article{PFMT_2021_4_a9,
     author = {R. V. Borodich},
     title = {On the intersection of non-$\mathfrak{F}$-subgroups, distinguished by a subgroup function, in groups with operators},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {64--68},
     publisher = {mathdoc},
     number = {4},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2021_4_a9/}
}