OpenStreetMap is a free editable map of the whole world. It is made by people like you. OpenStreetMap allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.
F. Schmid. Proceedings of the 4. Internat. Symposium on Location Based Services & TeleCartography, 0, Department of Land Surveying & Geo-Informatics, HongKong Polytechnic University; HongKong, (2007)
F. Schmid. Proceedings of the 4. Internat. Symposium on Location Based Services & TeleCartography, 0, Department of Land Surveying & Geo-Informatics, HongKong Polytechnic University; HongKong, (2007)
G. Look, und H. Shrobe. IUI '07: Proceedings of the 12th international conference on Intelligent user interfaces, Seite 309--312. New York, NY, USA, ACM, (2007)