@INPROCEEDINGS {14603,
author={PMC Carvalho and R. Dinis and   and M.B. Beko},
doi={0},
booktitle={IEEE Vehicular Technology Conf. - VTC-Fall},
title={On the Use of Multiple Grossly Nonlinear Amplifiers for Highly Efficient Linear Amplification of Multilevel Constellations},
year={2013},
month={September},
volume={1},
pages={1-5} 
}