On classifying subsets of natural numbers by their computable permutations.
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Combarro, E.F. (2004)
Sibirskij Matematicheskij Zhurnal
Jiří Hořejš (1965)
Archivum Mathematicum
Marie Hájková, Petr Hájek (1972)
Fundamenta Mathematicae
Antonín Kučera (1982)
Commentationes Mathematicae Universitatis Carolinae
Omanadze, R. (2002)
Georgian Mathematical Journal
Podzorov, S.Yu. (2006)
Sibirskij Matematicheskij Zhurnal
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