See also: N.N. Skryabin, I.V. Dyakonov, A.A. Kalinkin, S.P. Kulik, Ya.V. Kartashov, Y.Q. Zhang, V.O. Kompanets, S.V. Chekalin, V.N. Zadkov, S.K. Ivanov
PACS: 42.65.Tg, 05.45.Yv, 42.65.Re