Universal form of the low-energy (2 to 10 meV) vibrational spectrum of glasses Malinovsky, V. K. ; Novikov, V. N. ; Parshin, P. P. ; Sokolov, A. P. ; Zemlyanov, M. G. Abstract Publication: EPL (Europhysics Letters) Pub Date: January 1990 DOI: 10.1209/0295-5075/11/1/008 Bibcode: 1990EL.....11...43M