Hacigümüs, Hakan, Bala R. Iyer, Chen Li, and Sharad Mehrotra. "Executing SQL over Encrypted Data in the Database-Service-Provider Model." In ACM SIGMOD International Conference on Management of Data. USA, 2002.

Hacigümüs, Hakan, Bala R. Iyer, and Sharad Mehrotra. "Providing Database as a Service." In 18th International Conference on Data Engineering. San Jose, 2002.