Md.Hanif PAGE, R.Dhavaseelan, and B.Gunasekar, “Neutrosophic θ−Closure Operator”, Neutrosophic Sets Syst., vol. 38, pp. 41–50, Dec. 2020, Accessed: Jul. 16, 2024. [Online]. Available: https://fs.unm.edu/nss8/index.php/111/article/view/4171