Evidence of redox interactions between polypyrrole and FE IND. 3''O IND. 4' in polypyrrole-'FE IND. 3''O IND. 4' composite films - Montoya, Pedro; Jaramillo, F; Calderón, J; Torresi, Susana Inês Córdoba de; Torresi, Roberto Manuel (Electrochimica Acta, 2010)