See also: N.G. Birger, I.L. Rozental’, L.I. Saricheva, D.S. Chernavskii, E.L. Feinberg, I.M. Dremin
PACS: 12.40.Nn, 13.85.Dz, 13.85.Lg, 13.85.Tp, 11.55.Jy