@inproceedings{dklst06,
    author = {Döllner, Jürgen and Kolbe, Thomas H. and Liecke, Falko and Sgouros, Takis and Teichmann, Karin},
    booktitle = {25th Urban Data Management Symposium (UDMS)},
    title = {The Virtual 3D City Model of Berlin - Managing, Integrating, and Communicating Complex Urban Information},
    year = {2006},
    note = {Online proceedings},
}