@inproceedings{CIKM-2013-TianCZ,
	author        = "Shixin Tian and Ying Cai and Qinghua Zheng",
	booktitle     = "{Proceedings of the 22nd ACM International Conference on Information and Knowledge Management}",
	doi           = "10.1145/2505515.2507814",
	isbn          = "978-1-4503-2263-8",
	pages         = "1161--1164",
	publisher     = "{ACM}",
	title         = "{A hybrid approach for privacy-preserving processing of knn queries in mobile database systems}",
	year          = 2013,
}