2010 · Nicola Hönle, Matthias Grossmann, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 17
2004 · Thomas Schwarz, Markus Iofcea, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 8