@INPROCEEDINGS {3377,
author={S. Sargento and JP Barraca and R.  Aguiar},
doi={},
booktitle={Conf. sobre Redes de Computadores - CRC},
title={Evaluation of MANET charging protocols in hotspots scenarios},
year={2005},
month={September},
volume={1},
pages={1-1} 
}