@article{article52db5369, title = {Optical spectroscopy of 'Er POT.3+' and 'Yb POT.3+' co-doped fluorindate glasses}, author = {Ribeiro, C. T. M. and Zanatta, Antonio Ricardo and Nunes, Luiz Antônio de Oliveira and Messaddeq, Younnes and Aegerter, Michel André}, year = {1998}, journal = {Journal of Applied Physics} }