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@article{MMO_1971_25_a2, author = {G. K. Genov}, title = {On the theory of operations on the class of all groups}, journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva}, pages = {59--82}, publisher = {mathdoc}, volume = {25}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MMO_1971_25_a2/} }
G. K. Genov. On the theory of operations on the class of all groups. Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 25 (1971), pp. 59-82. http://geodesic.mathdoc.fr/item/MMO_1971_25_a2/