1.
D’Inverno, R.A. Introducing Einstein’s relativity. Clarendon Press; 1992.
2.
Rindler W. Relativity: special, general, and cosmological [Internet]. 2nd ed. Oxford: Oxford University Press; 2006. Available from: http://www.loc.gov/catdir/toc/fy0611/2006277893.html
3.
Woodhouse NMJ. General relativity [Internet]. Vol. Springer undergraduate mathematics series. London: Springer; 2007. Available from: http://www.loc.gov/catdir/toc/fy0705/2006926445.html
4.
Faber RL. Differential geometry and relativity theory: an introduction. New York: M. Dekker; 1983.
5.
Choquet-Bruhat Y. Introduction to general relativity, black holes, and cosmology [Internet]. First edition. Oxford: Oxford University Press; 2015. Available from: http://ezproxy.library.qmul.ac.uk/login?url=http://www.vlebooks.com/vleweb/product/openreader?id=QMUL&isbn=9780191644528&uid=^u