Songsaeng, Metawee, Kar Ping Shum, Ronnason Chinram, and Aiyared Iampan. 2021. “Neutrosophic Implicative UP-Filters, Neutrosophic Comparative UP-Filters, and Neutrosophic Shift UP-Filters of UP-Algebras”. Neutrosophic Sets and Systems 47 (December): 620-43. https://fs.unm.edu/nss8/index.php/111/article/view/2025.