Zero Placzek moment and the n-phonon cross-section : report SGAE PH-82/1969.
Eder, O. J.,author.
Sykes, J. B.,translator.
United Kingdom Atomic Energy Authority,issuing body.
Great Britain.Her Majesty's Stationery Office.
October 1969.
From Acta physica Austriaca, vol. no. 4. pp. 334-345, 1969.