@inproceedings{bdrk06,
    author = {Buchholz, Henrik and Döllner, Jürgen and Ross, Lutz and Kleinschmit, Birgit},
    booktitle = {Progress in Spatial Data Handling. 12th International Symposium on Spatial Data Handling (SDH)},
    title = {Automated Construction of Urban Terrain Models},
    year = {2006},
    pages = {547--562},
    publisher = {Springer},
}