@inproceedings{AAB+09, author = {Andrienko, Gennady and Andrienko, Natalia and Bak, Peter and Kisilevich, Slava and Keim, Daniel A.}, booktitle = {Proceedings of the Vision, Modeling, and Visualization Workshop (VMV)}, title = {Analysis of community-contributed space- and time referenced data by example of Panoramio photos}, year = {2009} }