1. Yu. S. Kuz’minov, Lithium Niobate and Tantalate As Materials for Nonlinear Optics (Nauka, Moscow, 1975) [in Russian].
2. Yu. S. Kuz’minov, Electro-Optical and Nonlinear Optical Lithium Niobate Crystal (Nauka, Moscow, 1987) [in Russian].
3. A. A. Blistanov, Crystals for Quantum and Nonlinear Optics (Izd-vo MISIS, Moscow, 2000) [in Russian].
4. T. Volk and M. Wöhlecke, Lithium Niobate: Defects, Photorefraction and Ferroelectric Switching (Springer, Berlin, 2008).
5. J. Henaff, M. Feldmann, and M. A. Kirov, Ferroelectrics 42 (1), 161 (1982). https://doi.org/10.1080/00150198208008110