Phonon-like and single-particle dynamics in liquid lithium T. Scopigno, U. Balucani, A. Cunsolo, C. Masciovecchio, G. Ruocco, F. Sette and R. Verbeni Europhys. Lett., 50 2 (2000) 189-195 Published online: 01 September 2002 DOI: 10.1209/epl/i2000-00253-5