O. Ravi, S. Pious Missier, and K. Mahaboob Hassain Sherieff. “On (1,2)*-r⍵-Closed Sets and (1,2)*-r⍵-Open Sets”. Jordan Journal of Mathematics and Statistics 5, no. 1 (May 18, 2025): 19–35. Accessed September 10, 2025. https://jjms.yu.edu.jo/index.php/jjms/article/view/1142.