M. Sundararaman and  K. Chandrasekhara Rao,  (T1, T2)*- Semi Star Generalized Locally Closed Sets.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    December 2011, vol. 60(12). 2145 - 2149
    [viewed 24 April 2024]. Available from: https://publications.waset.org/pdf/13485.