See also: B.M. Smirnov, E.A. Sosnin, V.Yu. Kozhevnikov, A.V. Kozyrev, V.S. Skakun, V.F. Tarasenko, G.V. Naidis, N.Yu. Babaeva
PACS: 07.05.Tp, 52.80.Mg, 52.90.+z, 92.60.Pw