Thomas Locher Pascal von Rickenbach Roger Wattenhofer Sensor Networks Continue to Puzzle: Selected Open Problems. 25-38 2008 conf/icdcn/2008 ICDCN http://dx.doi.org/10.1007/978-3-540-77444-0_3 db/conf/icdcn/icdcn2008.html#LocherRW08