@inproceedings{jd08,
    author = {Jobst, Markus and Döllner, Jürgen},
    booktitle = {Visual Information Systems. Web-Based Visual Information Search and Management},
    title = {Better Perception of 3D-Spatial Relations by Viewport Variations},
    year = {2008},
    note = {10th International Conference, VISUAL 2008, Salerno, Italy},
    pages = {7--18},
    publisher = {Springer},
    series = {Lecture Notes in Computer Science},
    volume = {5188/2008},
    doi = {10.1007/978-3-540-85891-1_4},
}