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@article{AL_2019_58_5_a5, author = {R. Downey and A. G. Melnikov}, title = {On realization of index sets in $\Pi_1^0$-classes}, journal = {Algebra i logika}, pages = {659--663}, publisher = {mathdoc}, volume = {58}, number = {5}, year = {2019}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_2019_58_5_a5/} }
R. Downey; A. G. Melnikov. On realization of index sets in $\Pi_1^0$-classes. Algebra i logika, Tome 58 (2019) no. 5, pp. 659-663. http://geodesic.mathdoc.fr/item/AL_2019_58_5_a5/