@INPROCEEDINGS {13056,
author={M. Ara and H. Reboredo and F. Renna and M. Rodrigues },
doi={},
booktitle={Conf. on Telecommunications  - ConfTele},
title={Power Allocation Strategies For OFDM Gaussian Wiretap Channels With a Friendly Jammer: The Degraded case},
year={2013},
month={May},
volume={xx},
pages={1-4} 
}