[1]
“On *gs-Closed sets in Bitopological spaces”, J. Int. Acad. Phys. Sci., vol. 13, no. 2, pp. 155–166, Jun. 2009, Accessed: Oct. 23, 2026. [Online]. Available: http://www.iaps.org.in/journal/index.php/journaliaps/article/view/171