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@article{MMO_1963_12_a5, author = {G. I. Kats}, title = {Ring groups and the duality principle}, journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva}, pages = {259--301}, publisher = {mathdoc}, volume = {12}, year = {1963}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MMO_1963_12_a5/} }
G. I. Kats. Ring groups and the duality principle. Trudy Moskovskogo matematičeskogo obŝestva, Trudy Moskovskogo Matematicheskogo Obshchestva, Tome 12 (1963), pp. 259-301. http://geodesic.mathdoc.fr/item/MMO_1963_12_a5/