A PERF solution for distributed query optimization. - Ramzi A. Haraty; Roula C. Fany (CATA, 2000)

Distributed Query Optimization Using PERF Joins. - Ramzi A. Haraty; Roula C. Fany (SAC (1), 2000)

Query Acceleration in Distributed Database Systems. - Ramzi A. Haraty; Roula C. Fany (Rev. Colomb. de Computación, 2001)