1. R.W. James, The Optical Principles of the Diffraction of X-rays (Bell and Sons, London, 1967)
2. I.I. Gurevich, L.V. Tarasov, Physics of Low-Energy Neutrons (North-Holland, Amsterdam, 1968)
3. R.B. Hirsch, A. Howie, B.B. Nicholson, D.W. Pashley, M.J. Whelan, Electron Microscopy of Thin Crystals (Butterworth, London, 1965)
4. V.A. Belyakov, UFN 115, 553 (1975) [Sov. Phys.-Usp. 18, 267 (1975)]
5. V.B. Berestetskii, E.M. Lifshitz, L.P. Pitaevskii, Relativistic Quantum Theory, Part 1 (Nauka, Moscow, 1968). (in Russian)