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]
LP-1990-16: Huang, Zhisheng and Kwast, Karen (1990) Awareness, Negation and Logical Omniscience. [Report]
CT-1990-05: van Denneheuvel, Sieger and Kwast, Karen (1990) Efficient Normalization of Database and Constraint Expressions. [Report]