STUDY OF THE STRUCTURE AND DYNAMIC BEHAVIOUR OF GRAIN BOUNDARIES USING DYNAMIC BALL-MODEL R. PINO PLASENCIA, D. L. BEKE, G. ERDÉLYI et F. J. KEDVESJ. Phys. Colloques, 51 C1 (1990) C1-317-C1-322DOI: https://doi.org/10.1051/jphyscol:1990150