@article{MZM_2006_79_1_a5,
     author = {M. A. Korpacheva and M. M. Sorokina},
     title = {On {Critical} $\omega${-Fan} {Formations} of {Finite} {Groups}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {87--94},
     publisher = {mathdoc},
     volume = {79},
     number = {1},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_79_1_a5/}
}