@inproceedings{hagedorn2008,
    author = {Hagedorn, Benjamin and Döllner, Jürgen},
    booktitle = {Proceedings of 9th International Symposium on Smart Graphics 2008, Rennes, France},
    title = {Sketch-Based Navigation in 3D Virtual Environments},
    year = {2008},
    pages = {239--246},
    publisher = {Springer Berlin Heidelberg},
    doi = {10.1007/978-3-540-85412-8_23},
    isbn = {978-3-540-85412-8},
}