Nmr, conductivity and neutron scattering investigation of ionic dynamics in the anhydrous polymer protonic conductor peo ' ('h ind.3' P 'o ind.4') IND.X' - Donoso, José Pedro; Gorecki, W; Berthier, C; Defendini, F; Poinsignon, C; Armand, M B (Solid State Ionics, 1988)