See also: I.K. Kamilov, A.K. Murtazaev, K.P. Belov, R.Z. Levitin
PACS: 75.40.-s, 02.70.Lq, 64.60.-i, 75.50.-y, 43.35.Cg, 64.60.Ht, 75.50.y, 75.30.Kz, 75.30.Gw