K. M. Dharmalingam, A. Thamilisai, and O. Ravi. “$\tilde{g}$(1,2)*-Closed Sets in Bitopological Spaces”. International Journal of Mathematics And Its Applications, vol. 3, no. 3 - A, Sept. 2015, pp. 53-61, http://ijmaa.in/index.php/ijmaa/article/view/446.