See also: V.L. Ginzburg, I.M. Gramenitskii, A.I. Mukhin, A.V. Gurevich, G.A. Askar’yan, Yu.V. Kopaev, E.L. Feinberg, I.M. Dremin, V.V. Usov, A.K. Murtazaev, P.S. Kop’ev
PACS: 01.10.Fv, 23.40.-s, 21.80.+a, 13.85.-t