See also: P.V. Ovcharov, L. Couëdel, S. Zhdanov, A.V. Ivlev, I. Laut, E.V. Yakovlev, N.P. Kryuchkov, A.M. Lipaev, V.M. Nosenko
PACS: 52.27.Lw, 63.22.-m, 64.70.dj