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Fuzzy upper bounds in groupoids.
Ahn SS, Kim YH, Neggers J. Ahn SS, et al. ScientificWorldJournal. 2014;2014:697012. doi: 10.1155/2014/697012. Epub 2014 May 28. ScientificWorldJournal. 2014. PMID: 24982979 Free PMC article.
Classes of int-soft filters in residuated lattices.
Jun YB, Ahn SS, Lee KJ. Jun YB, et al. Among authors: ahn ss. ScientificWorldJournal. 2014;2014:595160. doi: 10.1155/2014/595160. Epub 2014 Aug 27. ScientificWorldJournal. 2014. PMID: 25243219 Free PMC article.