See also: V.L. Ginzburg, N.N. Sobolev, V.F. Kitaeva, G.A. Askar’yan, A.V. Gurevich, Yu.V. Kopaev, E.L. Feinberg, P.S. Kop’ev, A.K. Murtazaev, V.V. Usov
PACS: 01.10.Fv