Representing terrain with mathematical operators

@inproceedings{stuetzle-sdh-2012,
    author = "Stuetzle, Christopher and Franklin, W. Randolph",
    title = "Representing terrain with mathematical operators",
    booktitle = "15th International Symposium on Spatial Data Handling",
    year = "2012",
    address = "Bonn, Germany",
    month = "22--24 Aug",
    customlinkslides = "https://wrfranklin.org/p/153-sdh2012-representing-talk.pdf",
    customlinkvideo = "https://wrfranklin.org/p/153-sdh2012-representing-video.mp4",
    mykey = "terrain stuetzle",
    href = "\bibhrefpt{153-sdh2012-representing}{153-sdh2012-representing-talk.pdf}"
}