Roderick M. Riensche Bob Baddeley Antonio Sanfilippo Christian Posse Banu Gopalan 99-105 2007 conf/IEEEscc/2007w IEEE SCW http://doi.ieeecomputersociety.org/10.1109/SERVICES.2007.73 db/conf/IEEEscc/scw2007.html#RienscheBSPG07