NMR and conductivity study of the protonic conductor H'Pb IND.2''Nb IND.3''O IND.10'.n'H IND.2'O - Tambelli, C E; Donoso, José Pedro; Magon, Claudio José; Angelo, A C D; Florentino, Ariovaldo de Oliveira; Saeki, Margarida Juri (Solid State Ionics, 2000)