IONIC CONDUCTIVITY OF YTTRIA STABILIZED ZIRCONIA OBTAINED BY SINTERING OF COPRECIPITATED POWDERS G. DE PORTU, A. FIEGNA et B. FABBRI J. Phys. Colloques, 47 C1 (1986) C1-777-C1-781 DOI: 10.1051/jphyscol:19861118