@inproceedings{STOC-2013-Ullman,
	author        = "Jonathan Ullman",
	booktitle     = "{Proceedings of the 45th Annual ACM Symposium on Theory of Computing}",
	doi           = "10.1145/2488608.2488653",
	isbn          = "978-1-4503-2029-0",
	pages         = "361--370",
	publisher     = "{ACM}",
	title         = "{Answering n{2+o(1)} counting queries with differential privacy is hard}",
	year          = 2013,
}