See also: A.A. Belyanin, V.V. Kocharovskii, V.V. Kocharovskii, D. Deppe, M.O. Scully, D.N. Krizhanovskii, V.D. Kulakovskii, B.A. Volkov, V.V. Klimov, N.N. Sibeldin, S.G. Tikhodeev, N.A. Gippius, A.I. Tartakovskii
PACS: 42.55.Px, 42.60.-v