@inproceedings{RE-2009-GhezziT,
	author        = "Carlo Ghezzi and Giordano Tamburrelli",
	booktitle     = "{Proceedings of the 17th International Requirements Engineering Conference}",
	doi           = "10.1109/RE.2009.34",
	isbn          = "978-0-7695-3761-0",
	pages         = "69--78",
	publisher     = "{IEEE Computer Society}",
	title         = "{Reasoning on Non-Functional Requirements for Integrated Services}",
	year          = 2009,
}