Murzin V.N. ,     Dravin V.A. ,     Karuzskii A.L. ,     Perestoronin A.V. ,     Sverbil P.P. ,     Eltsev Y.F. 22-th Intern. conf. low temperature physics, August 4-11, Espoo, and Helsinki, Finland, 1999 , с. P.6P8   Copyright © БЕН РАН.