Team, S. “$(\tau_1, \tau_2)^*$-Semi Star Generalized Locally Closed Sets: M. Sundararaman, K. Chandrasekhara Rao”. Thai Journal of Mathematics, vol. 12, no. 2, Aug. 2014, pp. 385-9, https://thaijmath2.in.cmu.ac.th/index.php/thaijmath/article/view/459.