1. S. Schweber, An Introduction to Relativistic Quantum Field Theory, Harper and Row, New York (1961).
2. V. G. Bagrov and D. M. Gitman, Exact Solutions of Relativistic Wave Equations, Kluwer, Dordrecht (1990).
3. W. H. Furry, Phys. Rev., 81, 115–124 (1951).
4. S. P. Gavrilov and D. M. Gitman, Internat. J. Mod. Phys. A, 15, 4499–4538 (2000).
5. A. A. Sokolov and I. M. Ternov, eds., Synchrotron Radiation [in Russian], Nauka, Moscow (1966); English transl., Akademie-Verlag, Berlin (1968); A. A. Sokolov and I. M. Ternov, Radiation from Relativistic Electrons [in Russian], Nauka, Moscow (1985); English transl., AIP, New York (1986); I. M. Ternov, V. V. Mikhailin, and V. R. Khalilov, Synchrotron Radiation and Its Applications, Harwood Academic, New York (1985).