Multisites and energy transfer in Cr3+-Nd3+ codoped Y3Al5O12 and YAlO3 laser crystals Jiri A. Mares, Wenjiang Nie et Georges BoulonJ. Phys. France, 51 15 (1990) 1655-1669DOI: https://doi.org/10.1051/jphys:0199000510150165500