Bulletin of the Section of Logic > 2020 > 49 > 4 > 377-400
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journal ISSN : | 2449-836X , 0138-0680 |
DOI | 10.18778/0138-0680.2020.21 |
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Bibliography
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[1] K. Atanassov, Intuitionistic fuzzy sets, Fuzzy Sets and Systems, vol. 20(1) (1986), pp. 87–96, DOI: http://dx.doi.org/10.1016/S0165-0114(86)80034-3
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[2] Y. Huang, BCI-algebra, Science Press, Beijing (2006).
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[3] Y. Jun, K. Hur, K. Lee, Hyperfuzzy subalgebras of BCK=BCI-algebras, Annals of Fuzzy Mathematics and Informatics (in press).