@inproceedings{jmkd09,
    author = {Jahnke, Mathias and Meng, Liqiu and Kyprianidis, Jan Eric and Döllner, Jürgen},
    booktitle = {Virtual Geographic Environments},
    title = {Non-photorealistic Visualizations on Mobile Devices and Usability Concerns},
    year = {2009},
    pages = {168--181},
    publisher = {Science Press, Beijing, China},
}