Michela Bertolotto Cyril Ray Xiang Li Web and Wireless Geographical Information Systems, 8th International Symposium, W2GIS 2008, Shanghai, China, December 11-12, 2008. Proceedings 5373 2008 http://dx.doi.org/10.1007/978-3-540-89903-7 978-3-540-89902-0 W2GIS Lecture Notes in Computer Science Springer db/conf/w2gis/w2gis2008.html