@ARTICLE {6178,
author={F. M. Ferreira and S. L. Jansen and P. Monteiro and H. A. Silva},
doi={10.1109/LPT.2011.2177250},
journal={IEEE Photonics Technology Letters},
title={Nonlinear Semi-Analytical Model for  Simulation of Few-Mode Fiber Transmission},
year={2012},
month={February},
volume={24},
number={4},
pages={240-242},
ISSN={1041-1135}
}