ATOMIC STRUCTURE OF SUPERCONDUCTOR YBa2Cu3O7-x IN FIELD ION MICROSCOPE G.A. MESYATS, N.N. SYUTKIN, V.A. IVCHENKO et E.F. TALANTSEV J. Phys. Colloques, 49 C6 (1988) C6-477-C6-481 DOI: 10.1051/jphyscol:1988681