Rewrite Rules for Quantified Subqueries in a Federated Database. - Graham J. L. Kemp; Peter M. D. Gray; Andreas R. Sjöstedt (SSDBM, 2001)

Improving Federated Database Queries Using Declarative Rewrite Rules for Quantified Subqueries. - Graham J. L. Kemp; Peter M. D. Gray; Andreas R. Sjöstedt (J. Intell. Inf. Syst., 2001)