@article{AL_1999_38_5_a1,
     author = {A. V. Zenkov and N. Ya. Medvedev},
     title = {On {Dlab} groups},
     journal = {Algebra i logika},
     pages = {531--548},
     publisher = {mathdoc},
     volume = {38},
     number = {5},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1999_38_5_a1/}
}