1. O.Ya. Usikov Institute for Radiophysics and Electronics of NAS of Ukraine,Radiospectroscopy dept.,Kharkiv,Ukraine
2. O.Ya. Usikov Institute for Radiophysics and Electronics of NAS of Ukraine,Solid-state electronics dept.,Kharkiv,Ukraine
3. O.Ya. Usikov Institute for Radiophysics and Electronics of NAS of Ukraine, Karazin Kharkiv National University,Radiospectroscopy dept.,Kharkiv,Ukraine