@conference {108,
	title = {Differential Privacy for Relational Algebra: Improving the Sensitivity Bounds via Constraint Systems},
	booktitle = {Proceedings 10th Workshop on Quantitative Aspects of Programming Languages and Systems},
	year = {2012},
	author = {Catuscia Palamidessi and Marco Stronati},
	editor = {Wiklicky, Herbert and Mieke Massink}
}