1. N. I. Valynets, A. G. Paddubskaya, Dr. P. P. Kuzhir; Institute of Nuclear Problems of Belarusian State University; Bobruiskaya Str. 11 220030 Minsk Belarus
2. Dr. P. P. Kuzhir, Prof. L. G. Bulusheva, Prof. A. V. Okotrub; Tomsk State University; 634050 Tomsk Russia
3. V. I. Sysoev, Prof. L. G. Bulusheva, Prof. A. V. Okotrub; Nikolaev Institute of Inorganic Chemistry, SB RAS; 3 Acad. Lavrentiev Ave. 630090 Novosibirsk Russia