@ARTICLE {9172,
author={A. Mahmoud  and Ricardo Ferreira Ferreira and A. Shahpari and J.D. Reis and M. J. N. Lima and A. Teixeira},
doi={10.1016/j.optcom.2014.04.014},
journal={Optics Communications},
title={Improved Nonlinear Tolerance in Ultra Dense WDM OFDM Systems},
year={2014},
month={September},
volume={326},
number={0030-4018},
pages={ 88-93},
ISSN={0030-4018}
}