@inproceedings{ed09,
    author = {Engel, Juri and Döllner, Jürgen},
    booktitle = {Proceedings of the Conference on Digital Landscape Architecture},
    series = {DLA '09},
    title = {Approaches Towards Visual 3D Analysis for Digital Landscapes and Its Applications},
    year = {2009},
    pages = {33--41},
    publisher = {Anhalt University of Applied Sciences},
}