Femtosecond relaxation processes in nonlinear materials studied with incoherent light T. Kobayashi, T. Hattori, A. Terasaki et K. KurokawaRev. Phys. Appl. (Paris), 22 12 (1987) 1773-1785DOI: https://doi.org/10.1051/rphysap:0198700220120177300