1. Nelson, E.: Quantum Fluctuations, Princeton U.P., Princeton, 1985.
2. Jackson, J. D.: Classical Electrodynamics, Wiley, New York, 1975.
3. Schweber, S.: An Introduction to Relativistic Quantum Field Theory, Row Peterson, New York, 1961.
4. Lorentz, H. A.: The Theory of Electrons, Dover, New York, 1952 (first edition 1909).
5. Dirac, P. A. M.: Classical theory of radiating electrons, Proc. Roy. Soc. A 167 (1938), 148?168.