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. Webb J. Phys. Colloques, 39 C6 (1978) C6-1385-C6-1389 DOI: 10.1051/jphyscol:19786576