@ARTICLE{cgUCL-BM08,
 	AUTHOR={Bresson, Emmanuel and Manulis, Mark},
	TITLE={{Contributory Group Key Exchange in the Presence of Malicious Participants}},
	PUBLISHER={IET},
	JOURNAL={IET Information Security},
	VOLUME={2},
	PAGES={85-93},
	MONTH={9},
	YEAR={2008},
}