References
- P.E. Long, An Introduction to General Topology, Merrill Publishing Company, London and New York, 1971.
- L.A. Steen and J.A.Jr. Seebach, Counterexamples in Topology, Springer-Verlag, New York, 1978.
- J.R. Munkers, Elements of Algebraic Topology, Addison-Wesley Publishing Company, California, 1984.
- S. Willard, General Topology, Dover Publications Inc., Mineola, New York, United States, 1970.
- J. Oudetallah, Nearly Expandability in bitopological spaces, Advances in Mathematics: Scientific Journal 10 (2021), 705-712. https://doi.org/10.37418/amsj.10.2.2
- J. Oudetallah, Expandability in bitopological spaces, (Ph.D Thesis), The University of Jordan, Jordan, 2018.
- R. Engleking, General Topology, Heldermann Verlag, Berlin, 1989.