THE QUANTAL PERMEATION CURRENT AND THE DISCREPANT INITIAL STAGE N-AND Z-DRIFTS IN NUCLEAR HEAVY ION COLLISIONS J.J. GRIFFIN, M. DWORZECKA and A. LUKASIAK J. Phys. Colloques, 48 C2 (1987) C2-259-C2-264 DOI: 10.1051/jphyscol:1987239