PECULIARITIES OF STRUCTURAL PHASE TRANSFORMATIONS IN PROTON EXCHANGED LAYERS OF Z-CUT LITHIUM NIOBATE CRYSTAL DURING ANNEALING. (2018). Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 20(3), 443-451. https://doi.org/10.17308/kcmf.2018.20/581