K.Meena, O.Nethaji, R.Premkumar, O.Ravi. “Ig-??-G-Closed Set,-Closed Sets”. International Journal of Current Research in Science and Technology 3, no. 01 (September 29, 2022). Accessed May 19, 2024. https://ijcrst.in/index.php/ijcrst/article/view/13.