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3. G. R. MORIDI and C. A. HOGARTH, ?The Physics of Non-Crystalline Solids? edited by G. H. Fischat (Trans. Tech., 1977) p. 254.
4. B. BRIDGE and G. R. MORIDI, Proceedings of the Institute of Acoustics Conference (University of Bath, 1977) p. 6-4-1.
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