@article{VLDB-2009-XiaoTC,
	author        = "Xiaokui Xiao and Yufei Tao and Minghua Chen",
	ee            = "http://www.vldb.org/pvldb/2/vldb09-732.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 1,
	pages         = "814--825",
	title         = "{Optimal Random Perturbation at Multiple Privacy Levels}",
	volume        = 2,
	year          = 2009,
}