@INPROCEEDINGS {3765,
author={J. Simões and R. Costa and P. Nunes and L. Mathy},
doi={},
booktitle={Annual Postgraduate Symp. - PGNET},
title={An Architecture for Centralized SIP-based Audio Conferencing using Application Layer Multicast},
year={2006},
month={June},
volume={-},
pages={---} 
}