@article{VLDB-2009-WangL,
	author        = "Ting Wang and Ling Liu",
	ee            = "http://www.vldb.org/pvldb/2/vldb09-75.pdf",
	journal       = "{Proceedings of the VLDB Endowment}",
	number        = 1,
	pages         = "1042--1053",
	title         = "{Privacy-Aware Mobile Services over Road Networks}",
	volume        = 2,
	year          = 2009,
}