ELLIPSOMETRIC AND ELECTROCHEMICAL STUDIES OF THE STATE OF THE SURFACE OF COBALT, NICKEL AND INDIUM ELECTRODES N. A. SHUMILOVA, Z. I. KUDRYAVTSEVA, N. A. ZHUCHKOVA, V. A. OPENKIN and E. I. KHRUSHCHEVA J. Phys. Colloques, 38 C5 (1977) C5-128 DOI: 10.1051/jphyscol:1977515