See also: Ya.S. Bobovich, M.M. Sushchinskii, E.V. Shpol’skii
PACS: 51.70.+f, 33.20.Sn, 33.20.Vq, 33.20.Fb, 33.15.Mt, 07.57.Ty, 06.20.Dk, 78.30.-j