FERMI SURFACE AND dHvA EFFECT IN THE NORMAL STATE OF HIGH Tc A-15 SUPERCONDUCTORS A. J. Arko, D. H. Lowndes, A. T. Van Kessel, H. W. Myron, F. M. Mueller, F. A. Muller, L. W. Roeland, J. Wolfrat et G. W. WebbJ. Phys. Colloques, 39 C6 (1978) C6-1385-C6-1389DOI: https://doi.org/10.1051/jphyscol:19786576