1. Sumy Institute for Surface Modification, Sumy State University, St. 2 R-Korsakov, 40007 Sumy, Ukraine
2. Institute of Metal Physics NAS of Ukraine, Kiev, Ukraine
3. Concern "Ukrrosmetal", Sumy, Ukraine
4. East-Kazakhstan State Technical University, Ust-Kamenogorsk, Kazakhstan
5. Institute for Nuclear Physics, Ulugbek, Tashkent, Uzbekistan
6. Lublin University of Technology, Lublin, Poland
7. Belarus State University, Minsk, Belarus
8. Kharkov National University, Kharkov, Ukraine