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@article{MZM_1972_11_1_a10, author = {Yu. E. Shishmarev}, title = {Categorical theories of a function}, journal = {Matemati\v{c}eskie zametki}, pages = {89--98}, publisher = {mathdoc}, volume = {11}, number = {1}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1972_11_1_a10/} }
Yu. E. Shishmarev. Categorical theories of a function. Matematičeskie zametki, Tome 11 (1972) no. 1, pp. 89-98. http://geodesic.mathdoc.fr/item/MZM_1972_11_1_a10/