Bast, Holger Algorithms and Complexity, MPI for Informatics, Max Planck Society;
Bast, H. (2004). Dimension Reduction: A Powerful Principle for Automatically Finding Concepts in Unstructured Data. In O. Babaoglu, M. Jelasity, A. Montresor, M. van Steen, A. van Moorsel, C. Fetzer, et al. (Eds.), International Workshop on Self-Star Properties in Complex Information Systems (pp. 113-116). Bertinoro, Italy: University of Bologna.