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@article{DAN_1971_199_4_a14, author = {A. V. Toger}, title = {On the complexity of some functional classes}, journal = {Doklady Akademii Nauk}, pages = {789--791}, publisher = {mathdoc}, volume = {199}, number = {4}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1971_199_4_a14/} }
A. V. Toger. On the complexity of some functional classes. Doklady Akademii Nauk, Tome 199 (1971) no. 4, pp. 789-791. http://geodesic.mathdoc.fr/item/DAN_1971_199_4_a14/