Hugh Darwen
Databases, types and the relational model
Bridge magic: double dummy problems, single dummy, sure tricks, curios and inferentials - and a monograph on squeezes
A guide to the SQL standard
Foundation for future database systems
Foundation for object/relational databases
Time and Relational Theory
An Introduction to Relational Database Theory
Compendium of Double Dummy Problems
Exercises on Relational Database Theory
SQL
SQL: A Comparative Survey
Temporal Data and the Relational Model