1. Weyl, H.: Raum-Zeit-Matterie. Julius Springer, Berlin (1918) (in German, English translation: Methuen and Co., Ltd., London, 1922)
2. Havas, P.: Four-dimensional formulations of Newtonian mechanics and their relation to the special and the general theory of relativity. Rev. Mod. Phys. 36, 938–965 (1964)
3. Friedman, M.: Foundations of Space–Time Theories (Relativistic Physics and Philosophy of Science). Princeton University Press, Princeton (1983)
4. Matolcsi, T.: A Concept of Mathematical Physics: Models in Mechanics. Akadémiai Kiadó (Publishing House of the Hungarian Academy of Sciences), Budapest (1986)
5. Matolcsi, T.: Spacetime Without Reference Frames. Akadémiai Kiadó Publishing House of the Hungarian Academy of Sciences), Budapest (1993)