Towards a Co-operative Data Base Management System. - J. C. Neves; M. Howard Williams (Logic Programming Workshop, 1983)

Security and Integrity in Logic Data Bases Using Query-By-Example. - M. Howard Williams; J. C. Neves; Stuart Oliver Anderson (Logic Programming Workshop, 1983)

Reorganization in a Simple Database System. - M. Howard Williams; I. M. Pattison; J. C. Neves (Softw. Pract. Exp., 1986)

Implementing Query Languages in Prolog. - F. Mouta; M. Howard Williams; J. C. Neves (Prolog and Databases, 1988)