Ian Wootten Shrija Rajbhandari Omer F. Rana Jaspreet Singh Pahwa 99-106 2006 conf/ccgrid/2006 CCGRID http://doi.ieeecomputersociety.org/10.1109/CCGRID.2006.1 db/conf/ccgrid/ccgrid2006.html#WoottenRRP06