[1] J. L. Kelley, “General Topology,” Springer, New York, 1955.
[2] A. S. Mashhour and M. H. Ghanim, “On Closure Spaces,” Indian Journal of Pure and Applied Mathematics, Vol. 106, No. 3, 1985, pp. 680-691.
[3] W. J. Thron, “What Results are Valid on Cech-closure Spaces”, Topology Proceedings. Vol 6, 1981, pp. 135-158.
[4] A. K. Elzenati and E. D. Habil, “Connectedness in Isotonic Spaces,” Turkish Journal of Mathematics, Vol. 30, No. 6 , 2006, pp. 247-262.
[5] K. Kuratowski, “Introduction to Set Theory and Topology,” Pergamon Press Ltd., London, 1961.
[6] B. Dai, “Strongly Connected Spaces,” National University of Singapore Journal, Vol. 12, No. 6, 2000, pp. 14-20.
[7] E. Michael, “Bi-Quotient Maps and Cartesian Product of Quotient Maps,” Anneles De l’institut Fourier, Vol. 18, No. 2, 1968, pp. 287-302.
[8] R. Engelking, “General Topology,” Haldermann Verlag, Berlin, 1989.