1. DOE Science Grid. http://doesciencegrid.org/
2. NEESgrid. http://www.neesgrid.org/
3. GIG (Global Information Grid). http://www.globalsecurity.org/intell/systems/gig.htm
4. The Grid: Blueprint for a New Computing Infrastructure;Foster,1999
5. The anatomy of the grid: enabling scalable virtual organization;Foster;International Journal of Supercomputer Application,2001