Yunsheng Liu Tian Bai Xin Liu XiaoBing Pei Scheduling Sensor Transactions to Maintain Data Temporal Validity. 206-209 2008 CSSE (4) http://dx.doi.org/10.1109/CSSE.2008.982 conf/csse/2008-4 db/conf/csse/csse2008-4.html#LiuBLP08