1. Boffet A 2000 Creating urban information for cartographic generalization Proceedings of the Tenth International Symposium on Spatial Data Handling
2. A review and conceptual framework of automated map generalization;Brassel;International Journal of Geographical Information Science,1988
3. Chaudhry O Mackaness W 2005 Rural and urban road network generalization deriving 1:250,000 from OS MasterMap Proceedings of the Twenty-second International Cartographic Association Conference
4. A note on two problems in connexion with graphs;Dijkstra;Numerische Mathematik,1959