Chernyshevskii Saratov State University Address:ul. Astrakhanskaya 83, Saratov, 410071, Russian Federation Website:
Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Saratov Branch Address:ul. Zelenaya 38, Saratov, 410019, Russian Federation Phone:+7 (8452) 27 24 01 Website:
