A unified solution of the specific-heat–phonon spectrum inversion problem DengMing Ming, Tao Wen, JiXin Dai, W. E. Evenson and XianXi Dai Europhys. Lett., 61 6 (2003) 723-728 Published online: 01 March 2003 DOI: 10.1209/epl/i2003-00288-6