1. Department of Optical Glass and Ceramics, O.G. Vlokh Institute of Physical Optics, 23, Dragomanov Str., 70005 Lviv, Ukraine
2. Faculty of Mathematics and Natural Sciences, Jan Dlugosz University in Czestochowa, 13/15, al. Armii Krajowej, 42-200 Czestochowa, Poland
3. Scientific Research Company “Electron-Carat”, 202, Stryjska Str., 79031 Lviv, Ukraine
4. Department of Mechanochemistry, Institute of Geotechnics of Slovak Academy of Sciences, 45, Watsonova Str., 04001 Košice, Slovakia
5. Department of Physics, Engineering and Astronomy, Austin Peay State University, Clarksville, TN 37044, USA
6. Institute of Physics, University of Rzeszow, 1, Pigonia Str., 35-959 Rzeszow, Poland
7. Department of Sensor and Semiconductor Electronics, Ivan Franko National University of Lviv, 107, Tarnavskoho Str., 79017 Lviv, Ukraine
8. Department of Inorganic Chemistry, Ivan Franko National University of Lviv, 6-8, Kyryla i Myfodia Str., 79005 Lviv, Ukraine