@INPROCEEDINGS {24631,
author={P. Gonçalves and J. L. Oliveira and R.  Aguiar and R. Pereira},
doi={10.1109/ICSNC.2009.91},
booktitle={IEEE International Conference on Systems and Networks Communications ICSNC},
title={Managing QoS in a NGN Using a PBM Approach},
year={2009},
month={September},
volume={1},
pages={1-1} 
}