@article{article6b0910ec,
title   = {Looping mechanism in Er-doped fluoroindogallate glasses},
author = {Bell, M. J. V. and Souza, D. F. and Nunes, Luiz Antônio de Oliveira},
year = {2000},
doi = {10.1063/1.373536},
journal   = {Journal of Applied Physics}
}