Multifunctional rare earth or bismuth oxide materials for catalytic or electrical applicationsJ.R. Gavarri, L. Bourja, B. Bakiz, F. Guinneton, S. Villain, M. Arab, A. Benlhachemi and M. EzahriMATEC Web of Conferences, 5 (2013) 01001DOI: https://doi.org/10.1051/matecconf/20130501001