NMR INVESTIGATIONS OF NATIVE AND DOPED POLYACETYLENE FILMS M. Ziliox, B. François, C. Mathis, B. Meurer, P. Spegt et G. Weill J. Phys. Colloques, 44 C3 (1983) C3-361-C3-364 DOI: 10.1051/jphyscol:1983373