@inproceedings{do01,
    author = {Döllner, Jürgen},
    booktitle = {WebMapping Symposium, In: Raumbezogenen Information und Kommunikation im Internet},
    title = {Virtuelle 3D-Kartenwelten},
    year = {2001},
    pages = {X.1--X.14},
    publisher = {Wichmann-Verlag},
}