@article{DAN_1981_260_5_a14,
     author = {V. T. Filippov},
     title = {On chains of varieties generated by free {Mal'tsev} and alternative algebras},
     journal = {Doklady Akademii Nauk},
     pages = {1082--1085},
     year = {1981},
     volume = {260},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_260_5_a14/}
}