@article{VMUMM_2009_6_a0,
     author = {V. S. Monakhov and O. A. Shpyrko},
     title = {The nilpotent $\pi$-length of maximum subgroups in finite $\pi$-soluble groups},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {3--8},
     publisher = {mathdoc},
     number = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2009_6_a0/}
}