@inproceedings{CP12, author = {X. Chen and J. Pang}, title = {Measuring query privacy in location-based services}, booktitle = {Proc.\ 2nd ACM Conference on Data and Application Security and Privacy (CODASPY'12)}, publisher = {ACM}, year = {2012}, pages = {49--60}, url = {http://satoss.uni.lu/jun/papers/CODASPY12.pdf}, ulkey = {Chen:7475} }