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@article{DAN_1961_136_6_a7, author = {S. R. Kogalovskii}, title = {A general method of obtaining the structural characteristics of axiomatized classes}, journal = {Doklady Akademii Nauk}, pages = {1291--1294}, publisher = {mathdoc}, volume = {136}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_136_6_a7/} }
S. R. Kogalovskii. A general method of obtaining the structural characteristics of axiomatized classes. Doklady Akademii Nauk, Tome 136 (1961) no. 6, pp. 1291-1294. http://geodesic.mathdoc.fr/item/DAN_1961_136_6_a7/