See also: E.M. Churazov, R.A. Sunyaev, M.G. Revnivtsev, D.A. Varshalovich, V.L. Ginzburg, V.D. Kuznetsov, K.K. Ghosh, G.A. Askar’yan, A.V. Gurevich, V.V. Zaitsev, O.N. Sholukhova, P.K. Abolmasov, S.N. Fabrika, A.V. Stepanov, S.V. Karpov
PACS: 01.10.Fv, 78.70.Bj, 98.35.-a, 98.70.-f