1. W. Cady, Piezoelectricity and Its Practical Application (Int. Lit. Moscow, 1949) (in Russian).
2. F. Iona and D. Shirane, Ferroelectrical Crystals (Izd. Mir, Moscow, 1965) (in Russian).
3. V. I. Iverenova and G. P. Revkevich, The Theory of X-ray Dispersion (Izd. Moskovsk. Univ., Moskow, 1972) (in Russian).
4. Z. G. Pinsker, X-ray crystallooptics (Izd. Nauka, Moscow, 1982) (in Russian).