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@article{AL_1974_13_6_a1, author = {V. V. V'yugin}, title = {Segments of recursively enumerable $m$-degrees}, journal = {Algebra i logika}, pages = {635--654}, publisher = {mathdoc}, volume = {13}, number = {6}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1974_13_6_a1/} }
V. V. V'yugin. Segments of recursively enumerable $m$-degrees. Algebra i logika, Tome 13 (1974) no. 6, pp. 635-654. http://geodesic.mathdoc.fr/item/AL_1974_13_6_a1/