@inproceedings{g3pcc,
	author={Eric Cheung,Pamela Zave},
	booktitle={Proceedings of the Second International Conference on Principles, Systems and Applications of {IP} Telecommunications},
	pages={45-68},
	publisher={Springer-Verlag LNCS 5310},
	title={Generalized third-party call control in {SIP} networks},
	year=2008,
}