@article{SM_1986_55_2_a6,
     author = {V. A. Andrunakievich and Yu. M. Ryabukhin},
     title = {On~varieties of quasiregular algebras},
     journal = {Sbornik. Mathematics},
     pages = {415--436},
     publisher = {mathdoc},
     volume = {55},
     number = {2},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1986_55_2_a6/}
}