title: distributing queries over low-power wireless sensor networks. authors: samuel madden , joseph m. hellerstein. venue: sigmod conference. year: 2002
title: power efficient data gathering and aggregation in wireless sensor networks. authors: h &#252; seyin &#214; zg &#252; r tan , ibrahim k &#246; rpeo &#487; lu. venue: acm sigmod record. year: 2003