Dielectric relaxations in ultrathin isotactic PMMA films and PS-PMMA-PS trilayer films M. Wübbenhorst, C.A. Murray and J.R. Dutcher Eur. Phys. J. E, 12 (2003) 109-112 Published online: 05 November 2003 DOI: 10.1140/epjed/e2003-01-025-1