Christian S. Jensen Hua Lu Man Lung Yiu Location Privacy Techniques in Client-Server Architectures. 31-58 2009 Privacy in Location-Based Applications http://dx.doi.org/10.1007/978-3-642-03511-1_2 conf/esorics/2009-5599 db/conf/esorics/lncs5599.html#JensenLY09