@inproceedings{strato,
	author={Pamela Zave,Gregory W. Bond,Eric Cheung,Thomas M. Smith},
	booktitle={Proceedings of the Third International Conference on Principles, Systems and Applicatons of IP Telecommunications},
	publisher={ACM SIGCOMM},
	title={Abstractions for programming {SIP} back-to-back user agents},
	year=2009,
}