See also: Yu.A. Litvinov, V. Bart, O.A. Kiselev, L.V. Grigorenko, G.M. Ter-Akopian, V.V. Parkhomchuk, S.M. Polozov, M. Pfutzner, S.I. Sidorchuk, H. Simon, R.S. Slepnev, K. Scheidenberger, V. Chudoba, E.Yu. Nikol’skii, P.G. Sharov
PACS: 21.10.Ft, 29.20.-c, 29.25.Rm