@article{AL_1979_18_1_a1,
     author = {E. G. Bryukhanova},
     title = {2-length and 2-period of a finite solvable group},
     journal = {Algebra i logika},
     pages = {9--31},
     publisher = {mathdoc},
     volume = {18},
     number = {1},
     year = {1979},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1979_18_1_a1/}
}