Normal vibrations of atomic groups in the sillenite lattice. II. $\mathrm{Me}(\mathrm{O}_{3}\mathrm{Bi}_{3})_{4}$ group

Yu. G. Zaretskii, Yu. I. Ukhanov, Yu. V. Shmartsev

Ioffe Physico-Technical Institute USSR Academy of Sciences, Leningrad

UDC: 535.343.2

Received: 02.11.1990