@inproceedings{hmd07,
    author = {Hagedorn, Benjamin and Maass, Stefan and Döllner, Jürgen},
    booktitle = {4th International Symposium on LBS and Telecartography},
    title = {Chaining Geoinformation Services for the Visualization and Annotation of 3D Geovirtual Environments},
    year = {2007},
}