@article{MMO_1992_54_a7,
     author = {S. V. Ivanov},
     title = {Strictly verbal products of groups and {A.\,I.~Mal'tsev's} problem on operations over groups},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {243--277},
     publisher = {mathdoc},
     volume = {54},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_1992_54_a7/}
}