See also: O. Dzyapko, Yu.A. Izyumov, V.E. Demidov, G.A. Smolenskii, S.V. Vonsovskii, K.P. Belov
PACS: 03.75.Hh, 75.30.Ds, 75.45.+j, 75.30.Et, 75.70.Cn, 75.60.Ej, 68.55.Jk