Journal publications

An Equivalence between Dependencies in Nested Databases and a Fragment of Propositional Logic (with S. Hartmann), Electronic Notes in Theoretical Computer Science, Volume 143, pp. 73-85

Functional Dependencies over XML Documents with DTDs (with S. Hartmann, K.-D. Schewe), Acta Cybernetica, Vol. 17(1), pp. 153-171

The Implication Problem of Functional Dependencies in Complex-value Databases (with S. Hartmann), Electronic Notes in Theoretical Computer Science, Volume 123, pages 125-137

Conference Proceedings

Functional Dependencies on Nested Attributes: Algebraic, logical and topological Perspective (with S. Hartmann), in the Proceedings of the 1st Workshop on Logical Aspects and Applications of Integrity Constraints - DEXA Workshops 2005, Copenhagen, pp. 818-822, IEEE Computer Society, ISBN: 0769524249