2001 · Tony Griffiths, Alvaro A. A. Fernandes, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 27
2002 · Nassima Djafri, Alvaro A. A. Fernandes, et al. · ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (SIGSPATIAL GIS) · 12