Yong Liu Luigi Marini Rob Kooper Alejandro Rodríguez David J. Hill 0002 James D. Myers Barbara S. Minsker Virtual Sensors in a Web 2.0 Virtual Watershed. 386-387 2008 eScience http://doi.ieeecomputersociety.org/10.1109/eScience.2008.115 conf/eScience/2008 db/conf/eScience/eScience2008.html#LiuMKRHMM08