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