This work is licensed under a
Creative Commons Attribution 4.0 International License
Hameed N.F. & Mohammed Yahya Abid , Certain types of separation axioms in Tri-topological spaces, Iraqi journal of science, Vol 52, No. 2, 2011, PP212-217.
Kelly J. C, Bitopological spaces, Proc. LondonMath. Soc., 3 PP. 17-89, (1963).
Kovar M., On 3-Topological version of Thet-Reularity, Internat. J. Math, Sci, Vol. 23, No. 6, 393398, (2000).
Mukundan D.V., Introduction to Quad topological spaces, Int. Journal of Scientific & Engg. Research, Vol. 4, Issue 7, 2483-2485, July-(2013).