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@article{AL_1970_9_4_a3, author = {S. D. Denisov}, title = {The $m$-degrees of recursively enumerable sets}, journal = {Algebra i logika}, pages = {422--427}, publisher = {mathdoc}, volume = {9}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1970_9_4_a3/} }
S. D. Denisov. The $m$-degrees of recursively enumerable sets. Algebra i logika, Tome 9 (1970) no. 4, pp. 422-427. http://geodesic.mathdoc.fr/item/AL_1970_9_4_a3/