1. Yu. S. Kuz’minov, Electrooptical and Nonlinear Optical Lithium Niobate Crystal (Nauka, Moscow, 1987) [in Russian].
2. A. A. Blistanov, Crystals of Quantum and Nonlinear Optics (MISIS, Moscow, 2000) [in Russian].
3. N. V. Sidorov, T. R. Volk, B. N. Mavrin, and V. T. Kalinnikov, Lithium Niobate: Defects, Photorefraction, Vibrational Spectrum and Polaritons (Nauka, Moscow, 2003) [in Russian].
4. T. Volk and M. Wohlecke, Lithiumniobate. Defects, Photorefraction and Ferroelectric Switching (Springer, Berlin, 2008).
5. P. Günter and J. P. Huignard, Photorefractive Materials and Their Applications (Springer, Berlin, 2007).