@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/}
}