@inproceedings{inproceedingsb0bb0734,
title   = {Different energy relaxation of rare-earth ions in glasses},
author = {Guimarães, Francisco Eduardo Gontijo and Sabino, José Ricardo and Lebullenger, Ronan M. and Hernandes, Antônio Carlos},
year = {1997},
booktitle   = {Symposium on Lasers and their Applications}
}