Confined phonons in glasses T. Asthalter, M. Bauer, U. van Bürck, I. Sergueev, H. Franz and A.I. Chumakov Eur. Phys. J. E, 12 (2003) 9-12 Published online: 05 November 2003 DOI: 10.1140/epjed/e2003-01-003-7