Choquet-Bruhat, Yvonne. 2015. Introduction to General Relativity, Black Holes, and Cosmology. First edition. Oxford: Oxford University Press. http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780191644528&uid=^u.
D’Inverno, R.A. 1992. Introducing Einstein’s Relativity. Clarendon Press.
Faber, Richard L. 1983. Differential Geometry and Relativity Theory: An Introduction. New York: M. Dekker.
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Woodhouse, N. M. J. 2007. General Relativity. Vol. Springer undergraduate mathematics series. London: Springer. http://www.loc.gov/catdir/toc/fy0705/2006926445.html.
