@booklet {85,
	title = {Three-phase Cross-cloud Federation Model: The Cloud Sso Authentication},
	journal = {AFIN {\textquoteright}10 Proceedings of the 2010 Second International Conference on Advances in Future Internet},
	year = {2010},
	month = {25 July},
	pages = {94{\textendash}101},
	publisher = {IEEE Computer Society},
	address = {Washington, DC},
	doi = {10.1109/AFIN.2010.23},
	author = {Antonio Celesti and Francesco Tusa and Massimo Villari and Antonio Puliafito}
}
