DISLOCATION PINNING EFFECT. A PROBE OF SELF-INTERSTITIAL AND HYDROGEN MIGRATION IN NIOBIUM AND TANTALUM J. LAUZIER, J. HILLAIRET, A. VIEUX-CHAMPAGNE, J. BAUR et H. SCHULTZJ. Phys. Colloques, 48 C8 (1987) C8-119-C8-124DOI: https://doi.org/10.1051/jphyscol:1987814