1. Ai T, Guo R, Liu Y (2000) A Binary Tree Representation of Bend Hierarchical Structure Based on Gestalt Principles. In: Forer P, Yeh AGO, He J (eds) Proceedings of the 9th International Symposium on Spatial Data Handling, Beijing, pp 2a30–2a43
2. Ai T, Guo R (2000) A Constrained Delaunay Partitioning of Areal Objects to Support Map Generalization. Journal of Wuhan Technical University of Surveying and Mapping 25(1):35–41 (in Chinese)
3. Bader M, Weibel R (1997) Detecting and Resolving Size and Proximity Conflicts in the Generalization of Polygonal Maps. In: Ottoson L (eds) Proceedings of the 18th International Cartographic Conference. Stockholm, pp 1525–1532
4. Hernandez D, Clementini E (1995) Qualitative Distance. In: Proceedings of COSIT’95, Semmering, Austria, pp 45–57
5. Jones CB, Bundy GL, Ware JM (1995) Map Generalization with a Triangulated Data Structure. Cartography and Geographic Information System 22(4): 317–331