Anomalously sharp phonon excitations in 3He droplets N. Poertner, J. P. Toennies, A. F. Vilesov, G. Benedek and V. Hizhnyakov EPL, 88 2 (2009) 26007 Published online: 10 November 2009 DOI: 10.1209/0295-5075/88/26007