See also: V.D. Kulakovskii, S.G. Tikhodeev, D.N. Krizhanovskii, M.N. Makhonin, N.A. Gippius, V.B. Timofeev, L.V. Keldysh
PACS: 42.65.-k, 71.36.+e, 78.65.-n