1. Barut, A. O. (1964).Electrodynamics and Classical Theory of Fields and Particles (Macmillan, New York), Chap. III.
2. Corben, H. C., and Stehle, P. (1960).Classical Mechanics, 2nd ed. (Wiley, New York), Chap. 15.
3. Aharoni, J. (1965).The Special Theory of Relativity, 2nd ed. (Clarendon, Oxford), Chap. 4.
4. A formula similar to (29) also holds under transformation of coordinates. See Weyl, H. (1952).Space-Time-Matter (Dover, New York), p. 234; Pauli, W. (1981).The Theory of Relativity (Dover, New York), p. 66.
5. Einstein, A. (1953).The Meaning of Relativity, 5th ed. (Princeton University, Princeton, N.J.), p. 83. See also Einstein, A. (1952). InThe Principle of Relativity (Dover, New York), p. 151.