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@article{DAN_1973_212_4_a4, author = {M. I. Kanovitch}, title = {Irreducibility of the languages of a step-by-step semantic system}, journal = {Doklady Akademii Nauk}, pages = {800--803}, publisher = {mathdoc}, volume = {212}, number = {4}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1973_212_4_a4/} }
M. I. Kanovitch. Irreducibility of the languages of a step-by-step semantic system. Doklady Akademii Nauk, Tome 212 (1973) no. 4, pp. 800-803. http://geodesic.mathdoc.fr/item/DAN_1973_212_4_a4/