@inproceedings{inproceedingse39ad7de,
title   = {Low temperature up-conversion spectroscopy of nanosized Y203:Er,Yb phosphors},
author = {Pires, Ana Maria and Serra, Osvaldo Antonio and Heer, S. and Güdel, H. U.},
year = {2004},
publisher = {SBPMat},
booktitle   = {Encontro da SBPMat-Sociedade Brasileira de Pesquisas em Materiais}
}