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Phonon Dispersion and Lifetimes inShukla, Abhay; Calandra, Matteo; d’Astuto, Matteo; Lazzeri, Michele; Mauri, Francesco; Bellin, Christophe; Krisch, Michael; Karpinski, J.; Kazakov, S. M.; Jun, J.; Daghero, D.; Parlinski, K. · Physical Review Letters · 2003