CONVERSION-ELECTRON AND TRANSMISSION MÖSSBAUER STUDY OF YBa2 (Cul-xFex)3 O7-δ X. Z. Zhou, A. H. Morrish, Q. A. Pankhurst et M. Raudsepp J. Phys. Colloques, 49 C8 (1988) C8-2213-C8-2214 DOI: 10.1051/jphyscol:19888994