@article{PFMT_2019_1_a4,
     author = {R. V. Borodich},
     title = {On intersection of abnormal subgroups that don't contain a $\mathfrak{F}$-residual},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {26--30},
     publisher = {mathdoc},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2019_1_a4/}
}