SUSCEPTIBILITY PEAKS IN A FINE PARTICLE SYSTEM M. El-Hilo, K. O'Grady, J. Popplewell, R. W. Chantrell and N. Ayoub J. Phys. Colloques, 49 C8 (1988) C8-1835-C8-1836 DOI: 10.1051/jphyscol:19888839