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@article{DAN_1961_138_2_a6, author = {G. I. Kats}, title = {Generalization of the group principle of duality}, journal = {Doklady Akademii Nauk}, pages = {275--278}, publisher = {mathdoc}, volume = {138}, number = {2}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a6/} }
G. I. Kats. Generalization of the group principle of duality. Doklady Akademii Nauk, Tome 138 (1961) no. 2, pp. 275-278. http://geodesic.mathdoc.fr/item/DAN_1961_138_2_a6/