See also: Yu.V. Gulyaev, I.M. Kotelyanskii, S.G. Alekseev, Yu.M. Gal’perin, I.V. Anisimkin, V.I. Anisimkin, A.V. Medved’, P.E. Zil’berman, S.N. Ivanov, V.D. Kagan
PACS: 07.07.Df, 72.50.+b, 77.65.Dq, 62.65.+k