1. Burghardt, D., Purves, R. and Edwardes, A. Techniques for on‐the‐fly generalisation of thematic point data using hierarchical data structures. Proceedings of the GIS Research UK 12th Annual Conference, pp.60–63.
2. Cecconi, A. 2003. “Integration of cartographic generalization and multi‐scale databases for enhanced Web mapping.”. PhD thesis, Department of Geography, University of Zurich