SUPERPARAMAGNETIC-PARAMAGNETIC TRANSITION IN SMALL PARTICLES C. Djega-Mariadassou, L. Bessaïs, J. L. Dormann and G. Villers J. Phys. Colloques, 49 C8 (1988) C8-1825-C8-1826 DOI: 10.1051/jphyscol:19888834