Baowei Wang Xingming Sun Xinbing Wang Bin Xiao Time-Based Privacy Protection for Multi-attribute Data in WSNs. 615-622 2008 ICPADS http://dx.doi.org/10.1109/ICPADS.2008.67 conf/icpads/2008 db/conf/icpads/icpads2008.html#WangSWX08