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- Iskander Kalimullin, Bakhadyr Khoussainov, Alexander Melnikov, “Limitwise monotonic sequences and degree spectra of structures”, Proc. Amer. Math. Soc., 141, № 9, 2013, 3275
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- Barbara F. Csima, Iskander S. Kalimullin, “Degree spectra and immunity properties”, Mathematical Logic Qtrly, 56, № 1, 2010, 67
- BARBARA F. CSIMA, MATTHEW HARRISON-TRAINOR, “DEGREES OF CATEGORICITY ON A CONE VIAη-SYSTEMS”, J. symb. log., 82, № 1, 2017, 325
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- Wesley Calvert, Douglas Cenzer, Valentina Harizanov, Andrei Morozov, “Effective categoricity of equivalence structures”, Annals of Pure and Applied Logic, 141, № 1-2, 2006, 61
- Rodney G. Downey, Asher M. Kach, Steffen Lempp, Andrew E.M. Lewis-Pye, Antonio Montalbán, Daniel D. Turetsky, “The complexity of computable categoricity”, Advances in Mathematics, 268, 2015, 423
- A. Frolov, I. Kalimullin, V. Harizanov, O. Kudinov, R. Miller, “Spectra of highn and non-lown degrees”, Journal of Logic and Computation, 22, № 4, 2012, 755