Kaijae W, Poungsumpao P, Arayarangsi S, Iampan A. UP-ALGEBRAS CHARACTERIZED BY THEIR ANTI-FUZZY UP-IDEALS AND ANTI-FUZZY UP-SUBALGEBRAS. IJPAM [Internet]. 2016 Jul. 29 [cited 2026 Aug. 27];36:667-92. Available from: https://journals.uniurb.it/index.php/ijpam/article/view/6532