@inproceedings{inproceedings7e3ef22f, title = {Two photon spectroscopy of eletronic transitions in pure 'GD''AL''O IND.3'}, author = {Nunes, Luiz Antônio de Oliveira and Castro Neto, Jarbas Caiado de}, year = {1988}, booktitle = {International Conference on Quantum Electronics} }