@INPROCEEDINGS {14102,
author={R.A. Avó and P. Laurêncio and M. C. R.  Medeiros},
doi={0},
booktitle={International Conf. on Transparent Optical Networks - ICTON},
title={Comparative Study of Optical Up-Conversion},
year={2011},
month={June},
volume={1},
pages={1-4} 
}