See also: S.G. Rykovanov, A.A. Turinge, Yu.M. Shatunov, A.B. Savel’ev, B.M. Bolotovskii
PACS: 07.85.Fv, 21.10.-k, 41.60.-m, 25.20.-x, 41.50.+h, 41.60.Cr