References
- N. Bourbaki, Algèbre, Chap. 9, Hermann, Paris, 1959.
- J. L. Synge, Relativity, The Special Theory, North Holland, Amsterdam, 1956.
- J. L. Synge, Relativity, The General Theory, North Holland, Amsterdam, 1960.
- P. Suppes, Axioms for Relativistic Kinematics with or without Parity. Symposium on the Axiomatic Method, with special reference to geometry and physics, North Holland, Amsterdam, 1959, p. 291–307.
- P. R. Halmos, Finite Dimensional Vector Spaces, Van Nostrand, Princeton, 1958.