@INPROCEEDINGS {4350,
author={R.S. Luis and A. Teixeira and P. Monteiro},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Monitoring of amplified spontaneous emission and nonlinear phase noise in DPSK systems},
year={2006},
month={June},
volume={1},
pages={1-1} 
}