1. For a review of the early attempts see M. Abraham, Jahrb. Radioakt. u. Elektronik 11, 470 (1914).
2. See e.g. C. Møller, The theory of relativity; Oxford: Oxford University Press 1952,
3. or D. Böhm, The special theory of relativity; New York: W. A. Benjamin, Inc. 1965.
4. Klein, F.: Vorlesungen über die Entwicklung der Mathematik im 19. Jahrhundert, Bd. 2, Kap. 2. Berlin: Springer 1927.
5. The space-time structure of the special theory of relativity is discussed in all textbooks of this theory a particularly detailed account is given in H. Arzeliès, La cinématique relativiste. Paris: Gauthier-Villars 1955.