@article{AL_2019_58_4_a4,
     author = {V. V. Lodeishchikova},
     title = {A {Levi} class generated by a quasivariety of nilpotent groups},
     journal = {Algebra i logika},
     pages = {486--499},
     publisher = {mathdoc},
     volume = {58},
     number = {4},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2019_58_4_a4/}
}