CT-1993-04: Kwast, Karen L. and van Denneheuvel, Sieger (1993) The Meaning of Duplicates in the Relational Database Model. [Report]
CT-1992-02: Kwast, Karen L. and van Denneheuvel, Sieger (1992) Weak Equivalence: Theory and Applications. [Report]
CT-1991-04: van Denneheuvel, Sieger and Kwast, Karen (1991) Weak Equivalence. [Report]
CT-1991-05: van Denneheuvel, Sieger and Kwast, Karen (1991) Weak Equivalence for Constraint Sets. [Report]
CT-1990-05: van Denneheuvel, Sieger and Kwast, Karen (1990) Efficient Normalization of Database and Constraint Expressions. [Report]
CT-1990-02: van Denneheuvel, Sieger and de Lavalette, Gerard R. Renardel (1990) A Normal Form for PCSJ Expressions. [Report]
X-1990-10: van Denneheuvel, Sieger and van Emde Boas, Peter (1990) An Overview of the Rule Language RL/1. [Report]
CT-1990-08: de Geus, Fred and Rotterdam, Ernest and van Denneheuvel, Sieger and van Emde Boas, Peter (1990) Physiological Modelling using RL. [Report]
CT-1989-10: van Denneheuvel, Sieger (1989) The Rule Language RL/1. [Report]
CT-1989-11: Huang, Zhisheng and van Denneheuvel, Sieger and van Emde Boas, Peter (1989) Towards Functional Classification of Recursive Query Processing. [Report]