@inproceedings{md06a,
    author = {Maass, Stefan and Döllner, Jürgen},
    booktitle = {14th International Conference in Central Europe on Computer Graphics, Visualization and Computer Vision (WSCG)},
    title = {Dynamic Annotation of Interactive Environments using Object-Integrated Billboards},
    year = {2006},
    pages = {327--334},
}