1. Institute for Physical Research, National Academy of Sciences, Ashtarak 0203, Armenia
2. Russian-Armenian (Slavonic) University, Yerevan 0051, Armenia
3. California State University, Los Angeles, California 90032, United States
4. California Institute of Technology Pasadena, California 91125, United States
5. National Research Center “Kurchatov Institute”, Moscow 123182, Russia
6. Southern Federal University, Rostov-on-Don 344006, Russia