Schmidt-Rohr, K., Kulik, A. S., Beckham, H. W., Ohlemacher, A., Pawelzik, U., Boeffel, C., et al. (1994). MOLECULAR NATURE OF THE BETA-RELAXATION IN POLY(METHYL METHACRYLATE) INVESTIGATED BY MULTIDIMENSIONAL NMR. Macromolecules, 27(17), 4733-4745. doi:10.1021/ma00095a014.