S. V. Averin, V. A. Luzanov, V. A. Zhitov, L. Yu. Zakharov and V. M. Kotov 2025. Optical Properties of Nanometer Epitaxial Nickel Oxide Films on LiNbO₃ Substrates. Transactions in Optics and Photonics. 1, 1 (May 2025), 81–92.