SYNTHESIS AND CHEMISTRY OF THE NEW Y-BASED AND Bi-BASED HIGH TEMPERATURE SUPERCONDUCTING PEROVSKITES J. M. Tarascon, P. Barboux, P. F. Miceli, B. G. Bagley, L. H. Greene, G. W. Hull and M. Giroud J. Phys. Colloques, 49 C8 (1988) C8-2081-C8-2086 DOI: 10.1051/jphyscol:19888942