C. Veerappan and A. A, “Pythagorean Neutrosophic Ideals in Semigroups”, Neutrosophic Sets Syst., vol. 41, pp. 258–269, Mar. 2021, Accessed: Jun. 16, 2025. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/818