Three theorems on $tt$-degrees
Algebra i logika, Tome 17 (1978) no. 3, pp. 270-281
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@article{AL_1978_17_3_a3,
author = {A. N. Degtev},
title = {Three theorems on $tt$-degrees},
journal = {Algebra i logika},
pages = {270--281},
publisher = {mathdoc},
volume = {17},
number = {3},
year = {1978},
language = {ru},
url = {http://geodesic.mathdoc.fr/item/AL_1978_17_3_a3/}
}
A. N. Degtev. Three theorems on $tt$-degrees. Algebra i logika, Tome 17 (1978) no. 3, pp. 270-281. http://geodesic.mathdoc.fr/item/AL_1978_17_3_a3/