@ARTICLE {871,
author={J.  Rebola and A. Cartaxo},
doi={10.1515/JOC.2006.27.3.130},
journal={Journal of Optical Communications},
title={Closed-form expression for arbitrary modulation formats performance evaluation in optically amplified systems},
year={2006},
month={June},
volume={27},
number={3},
pages={130-136},
ISSN={0173-4911}
}