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@article{TRSPY_1964_72_a15, author = {G. S. Tseitin}, title = {Three theorems on constructive functions}, journal = {Informatics and Automation}, pages = {537--543}, publisher = {mathdoc}, volume = {72}, year = {1964}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TRSPY_1964_72_a15/} }
G. S. Tseitin. Three theorems on constructive functions. Informatics and Automation, Problems of the constructive direction in mathematics. Part 3, Tome 72 (1964), pp. 537-543. http://geodesic.mathdoc.fr/item/TRSPY_1964_72_a15/