@inproceedings {carvalho09pixgeo,
    title = {PixGeo: Geographically Grounding Personal Photographs},
    booktitle = {SAMT - 4th International Conference on Semantic and Digital Media Technologies},
    year = {2009},
    month = {December},
    address = {Graz, Austria},
    author = {Rodrigo F. Carvalho and Fabio Ciravegna} }