Nils Hoeller Christoph Reinke Jana Neumann Sven Groppe Christian Werner Volker Linnemann Towards energy efficient XPath evaluation in wireless sensor networks. 2009 DMSN http://doi.acm.org/10.1145/1594187.1594193 conf/dmsn/2009 db/conf/dmsn/dmsn2009.html#HoellerRNGWL09