@article{SM_1987_57_1_a10,
     author = {V. S. Anashin},
     title = {Mixed identities and mixed varieties of groups},
     journal = {Sbornik. Mathematics},
     pages = {171--182},
     publisher = {mathdoc},
     volume = {57},
     number = {1},
     year = {1987},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1987_57_1_a10/}
}