Min Li Xiaoxun Sun Hua Wang Yanchun Zhang Optimal Privacy-Aware Path in Hippocratic Databases. 441-455 2009 DASFAA http://dx.doi.org/10.1007/978-3-642-00887-0_39 conf/dasfaa/2009 db/conf/dasfaa/dasfaa2009.html#LiSWZ09