Mani Parimala, Ibtesam Alshammari , P.M.Sithar Selvam. “A New Type Of Closed Sets In Terms Of Grills”. International Journal of Modern Agriculture 9, no. 4 (December 30, 2020): 720- 731. Accessed May 3, 2024. https://modern-journals.com/index.php/ijma/article/view/414.