See also: K.M. Bokova, N.N. Sobolev, N.G. Basov, O.A. Shustin, A.F. Suchkov, V.E. Privalov, V.A. Danilychev, S.A. Fridrikhov, B.Sh. Perkal’skis, V.V. Sokovikov, E.M. Belenov, I.A. Yakovlev
PACS: 42.55.Lt, 42.60.Fc, 42.60.Jf, 42.79.Bh