EPR INVESTIGATIONS OF SIZE EFFECTS IN THE CRYSTAL FIELD OF SMALL DIELECTRIC PARTICLES OF Gd3+-DOPED SrCl2 M. RAPPAZ, A. CHÂTELAIN et L. A. BOATNER J. Phys. Colloques, 38 C2 (1977) C2-105-C2-108 DOI: 10.1051/jphyscol:1977221