K. Porselvi, B. Elavarasan, Florentin Smarandache, and Y. B. Jun. “Neutrosophic ℵ −bi-Ideals in Semigroups”. Neutrosophic Sets and Systems 35 (February 14, 2024): 422–434. Accessed November 11, 2024. https://fs.unm.edu/nss8/index.php/111/article/view/4011.