@ARTICLE{cgUCL-AEQ07,
 	AUTHOR={Aboudagga, Nidal and Eltoweissy, Mohamed and Quisquater, Jean-Jacques},
	TITLE={{Two-Level Signature Delegation For Mobile First Responder Authentication}},
	BOOKTITLE={The Second International Workshop on Trusted Collaboration, 2007},
	PUBLISHER={IEEE Computer Society},
	JOURNAL={TrustCol-2007},
	MONTH={11},
	YEAR={2007},
}