1. Zhubanov Aktobe Regional State University , 34 A.Moldagulova Ave., Aktobe , 030000 , Kazakhstan
2. Begeldinov Military Institute of Air Defence Forces , 39 Moldagulova Ave., Aktobe , 030012 , Kazakhstan
3. Institute of Solid State Physics , University of Latvia , 8 Ķengaraga Str., LV-1063 , Latvia