Nanostructure and low-frequency vibrations in plasticized poly(methyl methacrylate)E. Duval, M. Kozanecki, L. Saviot, L. David, S. Etienne, V. A. Bershtein and V. A. RyzhovEurophys. Lett., 44 6 (1998) 747-752DOI: https://doi.org/10.1209/epl/i1998-00535-4