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[1] Rodzhers Kh., Teoriya rekursivnykh funktsii i effektivnaya vychislimost, Mir, M., 1972, 624 pp. | MR
[2] Cooper S. B., “Enumeration reducibility, nondeterministic computations and relative computability of partial functions”, Lect. Notes Math., 1432, 1990, 57–110 | MR | Zbl
[3] Soare R. I., Recursively enumerable sets and degrees: a study of computable functions and computably generated sets, Springer-Verlag, Berlin, 1987, 437 pp. | MR
[4] Arslanov M. M., Kalimullin I. Sh., Sorbi A., Density results in the $\Delta_2^0$-degrees, Preprint No 364, Universita di Siena, Dipartamento di Matematica, Siena, 1999, 20 pp.
[5] Arslanov M. M., “Degree structures in local degree theory”, Lect. Notes Pure and Appl. Math., 187, 1997, 49–74 | MR | Zbl
[6] Arslanov M. M., “O strukture stepenei nizhe $\mathbf{0'}$”, Izv. vuzov. Matematika, 1988, no. 7, 27–33 | MR