@inproceedings{vi2003nid,
  title = {A New Input Device for 3D Sketching},
  author = {Mark Schroering and Cindy Grimm and Robert Pless},
  booktitle = {Vision Interface},
  pages = {311--318},
  note = {A novel sketch device using a piece of paper and a camera.},
  month = {June},
  year = {2003}
}