1. Ivan Franko National University of Lviv, Faculty of Electronics and Computer Technologies, Department of Radiophysics and Computer Technologies, 107 Gen. Tarnavskogo Str., 79017 Lviv, Ukraine
2. Scientific Research Company "Electron-Carat", 202 Stryjska Str., 79031 Lviv, Ukraine
3. Ivan Franko National University of Lviv, Faculty of Physics, Experimental Physics Department, 8 Kyryla and Mefodiya Str., 79005 Lviv, Ukraine