@article{MT_1984_4_a4,
     author = {A. N. Skiba},
     title = {Formations with supersolvable local subformations},
     journal = {Matemati\v{c}eskie trudy},
     pages = {101--118},
     year = {1984},
     volume = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_1984_4_a4/}
}