@booklet {75,
	title = {An Approach To Enable Cloud Service Providers To Arrange Iaas, Paas, And Saas Using External Virtualization Infrastructures},
	journal = {Services (SERVICES), 2011 IEEE World Congress on},
	year = {2011},
	month = {9, 2011},
	pages = {607{\textendash}611},
	publisher = {IEEE Computer Society},
	address = {Los Alamitos, CA},
	doi = {10.1109/SERVICES.2011.92},
	author = {Antonio Celesti and Francesco Tusa and Massimo Villari and Antonio Puliafito}
}
