1. Abramowitz, M., Stegun, I.E.: Handbook of mathematical functions. Dover, New York (1964)
2. Berestetskii, V.B., Lifshitz, E.M., Pitaevskii, L.P.: Course of Theoretical Physics. Quantum Electrodynamics, vol. 4. Pergamon Press, Oxford (1982)
3. Bessonov, E.G.: Methods of electron beam bunching. Nucl. Instrum. Method Phys. Res. A 528, 511–515 (2004)
4. Biryukov, V.M., Chesnokov, Yu.A., Kotov, V.I.: Crystal Channeling and Its Application at High-Energy Accelerators. Springer, Berlin/Heidelberg (1996)
5. Bogacz, S.A., Ketterson, J.B.: Possibility of obtaining coherent radiation from a solid state undulator. J. Appl. Phys. 60, 177–188 (1986)