See also: A.S. Bugaev, A.Ju. Kolodyazhnyj, P.A. Eroshkin, V.B. Kireev, V.A. Romanko
PACS: 42.72.Bj, 85.60.Jb, 88.05.Tg, 07.85.Fv, 41.50.+h, 79.70.+q