Madsen, O. L. & Møller-Pedersen, B. (1992). Part Objects and Their Location. In G. Heeg, B. Magnusson & B. Meyer (Eds.), TOOLS 1992: Dortmund, Germany (pp. 83-97). Prentice-Hall.
Dahl, B., Hølledig, V., Munter, J., Møller, J., Nielsen, L., Simoni Larsen, S. & Thomassen, L. (1992). Paul Ernests socialkonstruktivisme: en grundlags- og konsistenskritik. Aalborg University, Institute for Electronic Systems, Department of Mathematics and Computer Science. (7th semester's (MAT3) report, listed at Aalborg University Library as 'Master's thesis').