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Translated from Kibernetika, No. 2, pp. 42–48, March–April, 1981.
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Demetrovics, J., Gyepes, D. Axiomatization of generalized functional dependences in relational data bases. Cybern Syst Anal 17, 202–210 (1981). https://doi.org/10.1007/BF01069634
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DOI: https://doi.org/10.1007/BF01069634