C.Janaki, A.Jayalakshmi*,. “ON (1,2)*-WGR -CLOSED SETS IN BITOPOLOGICAL SPACES”. Asian Journal of Current Engineering and Maths 1, no. 6 (October 7, 2013). Accessed April 28, 2024. http://innovativejournal.in/index.php/ajcem/article/view/120.