1. Lobachevsky State University of Nizhny Novgorod
2. Nizhny Novgorod
3. Russia
4. G. G. Devyatykh Institute of Chemistry of High-Purity Substances
5. Russian Academy of Sciences
6. Institute of Microelectronics Technology and High-Purity Materials
7. National University of Science and Technology MISIS
8. Moscow
9. Prokhorov General Physics Institute