@article{AL_1995_34_3_a9,
     author = {V. Yu. Popov},
     title = {On equational theories of varieties of metabelian and},
     journal = {Algebra i logika},
     pages = {347--361},
     publisher = {mathdoc},
     volume = {34},
     number = {3},
     year = {1995},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1995_34_3_a9/}
}