Simon Rieche Klaus Wehrle Leo Petrak Clemens Wrzodek Cerco: Supporting Range Queries with a Hierarchically Structured Peer-to-Peer System. 509-510 2006 LCN http://dx.doi.org/10.1109/LCN.2006.322147 conf/lcn/2006 db/conf/lcn/lcn2006.html#RiecheWPW06