    @proceedings {1609,
	title = {Public Key Infrastructure, 4th European PKI Workshop: Theory and Practice, EuroPKI 2007, Palma de Mallorca, Spain, June 28-30, 2007, Proceedings},
	journal = {EuroPKI},
	volume = {4582},
	year = {2007},
	publisher = {Springer},
	isbn = {978-3-540-73407-9},
	editor = {Javier Lopez and Pierangela Samarati and Josep L. Ferrer}
}
