CURRENT LEADS SYSTEM FOR A SUPERCONDUCTING CYCLOTRON E. Acerbi, F. Broggi, L. Rossi, R. Duthil et F. KircherJ. Phys. Colloques, 45 C1 (1984) C1-667-C1-670DOI: https://doi.org/10.1051/jphyscol:19841135