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Literature Cited
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Translated from Kibernetika, No. 4, pp. 19–22, July–August, 1978.
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Romov, B.A. Post algebras of type F ∞4 . Cybern Syst Anal 14, 502–506 (1978). https://doi.org/10.1007/BF01069828
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DOI: https://doi.org/10.1007/BF01069828