@article{AL_2005_44_3_a4,
     author = {N. Ya. Medvedev},
     title = {Soluble {Groups} and {Varieties} of $l${-Groups}},
     journal = {Algebra i logika},
     pages = {355--367},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2005_44_3_a4/}
}