Khattak, Arif, Saleem Abdullah, Asad Zaighum, Fahad Jamal, Muhammad Afzal Rana, Zaheer Anjum, Muhammad Zamir, & Muhammad Ishfaq. "Characterization of Soft Semi Separation Axioms in Soft Quad Topological Spaces." Iraqi Journal of Science [Online], 59.1C (2018): 552-563. Web. 21 Sep. 2019