STUDY OF DEFECTS IN β-CuZn WITH THE POSITRON ANNIHILATION TECHNIQUE C. Platteau, D. Segers, M. Dorikens, L. Dorikens-Vanpraet et J. Janssen J. Phys. Colloques, 43 C4 (1982) C4-733 DOI: 10.1051/jphyscol:19824119