@article{AL_1980_19_6_a4,
     author = {Yu. N. Mal'tsev},
     title = {Some examples of varieties of associative rings},
     journal = {Algebra i logika},
     pages = {669--675},
     publisher = {mathdoc},
     volume = {19},
     number = {6},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1980_19_6_a4/}
}