IRREVERSIBLE PHOTOINDUCED CHANGE IN THE OPTICAL ABSORPTION OF YIG(Si) ON IRRADIATION J. F. DILLON, Jr, E. M. GYORGY et J. P. REMEIKAJ. Phys. Colloques, 32 C1 (1971) C1-794-C1-795DOI: https://doi.org/10.1051/jphyscol:19711279