MAGNETIC BEHAVIOUR OF THE HIGH-Tc OXIDE SUPERCONDUCTORS EuBa2Cu3Oy AND GdBa2Cu3Oy J. Schaf, P. Pureur et J. V. Kunzler J. Phys. Colloques, 49 C8 (1988) C8-2187-C8-2188 DOI: 10.1051/jphyscol:19888981