Literature cited
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Additional information
Translated from Algebra i Logika, Vol. 12, No. 5, pp. 512–529, September–October, 1973.
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V'yugin, V.V. On some examples of upper semilattices of computable enumerations. Algebr Logic 12, 287–296 (1973). https://doi.org/10.1007/BF02218587
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DOI: https://doi.org/10.1007/BF02218587