K. Porselvi, B. Elavarasan, and Florentin Smarandache. “Neutrosophic ℵ −interior Ideals in Semigroups”. Neutrosophic Sets and Systems 36 (October 7, 2020): 70–80. Accessed May 18, 2025. https://fs.unm.edu/nss8/index.php/111/article/view/771.