Akara, H. Al, M. Al-Tahan, and J. Vimala. 2021. “Some Results on Single Valued Neutrosophic Bi-Ideals in Ordered Semigroups”. Neutrosophic Sets and Systems 45 (October): 181-96. https://fs.unm.edu/nss8/index.php/111/article/view/1779.