Nancy Wilkins-Diehr Dennis Gannon Gerhard Klimeck Scott Oster Sudhakar Pamidighantam TeraGrid Science Gateways and Their Impact on Science. 32-41 2008 41 IEEE Computer 11 http://dx.doi.org/10.1109/MC.2008.470 db/journals/computer/computer41.html#Wilkins-DiehrGKOP08