References
- Keith Devlin, 1992. The Joy of Sets, 2nd ed. Springer-Verlag.
- Michael Potter, 2004. Set Theory and Its Philosophy. Oxford Univ. Press.
- Patrick Suppes, 1972. Axiomatic Set Theory. Dover Publications.
- George Tourlakis, 2003. Lectures in Logic and Set Theory, Vol. 2. Cambridge Univ. Press.
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