Benchmarking Prolog for Database Applications. - M. Howard Williams; P. A. Massey; Jim A. Crammond (Prolog and Databases, 1988)

Prolog and deductive databases. - M. Howard Williams; G. Chen; D. Ferbrache; P. A. Massey; S. Salvini; Hamish Taylor; Kam-Fai Wong (Knowl. Based Syst., 1988)