See also: Ya.A. Smorodinskii, B.M. Smirnov, A.P. Silin, A.N. Matveev, S.M. Zhebrovskii, T.O. Vreden-Kobetskaya
PACS: 01.30.Vv, 29.50.+v, 07.05.Wr, 29.40.-n