EFFECTS ON PRESSURE ON THE SPECTRA, LIFETIMES AND ENERGY TRANSFER OF Eu P5O14, Tb P5O14 AND Eu1-xTbxP5O14 B. Blanzat, N. Tercier, J. P. Denis et C. BarthouJ. Phys. Colloques, 45 C8 (1984) C8-71-C8-74DOI: https://doi.org/10.1051/jphyscol:1984814