Hu, W.-G.W.-G.HuBoeffel, C.C.BoeffelSchmidt-Rohr, K.K.Schmidt-Rohr2022-03-032022-03-031999https://publica.fraunhofer.de/handle/publica/19646910.1021/ma981138ten621547Chain flips in polyethylene crystallites and fibers characterized by dipolar 13C NMRjournal article