OPTICAL PROPERTIES OF Eu3+ AND Cr3+ DOPED LaCaZrSiBORATE A. BROWN, A. BRUCE, J. A. CAPOBIANCO, D. KRASHKEVICH et D. J. SIMKINJ. Phys. Colloques, 48 C7 (1987) C7-501-C7-504DOI: https://doi.org/10.1051/jphyscol:19877119