Electronic properties of non-doped and doped polyacetylene films studied by E.S.R. P. Bernier, M. Rolland, M. Galtier, A. Montaner, M. Regis, M. Candille, C. Benoit, M. Aldissi, C. Linaya, F. Schué et al. (3 de plus) J. Physique Lett., 40 13 (1979) 297-301 DOI: 10.1051/jphyslet:019790040013029700