@article{ISU_2021_21_1_a1,
     author = {M. M. Sorokina and S. P. Maksakov},
     title = {On maximal subformations of $n$-multiple $\Omega$-foliated formations of~finite groups},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {15--25},
     publisher = {mathdoc},
     volume = {21},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2021_21_1_a1/}
}