@mastersthesis{tech200320,
  title = {A Thesis on a 3D Input Device for Sketching Characters},
  author = {Mark Schroering},
  number = {2003-20},
  institution = {Washington University in St. Louis},
  school = {Department of Computer Science and Engineering},
  note = {Tracking a piece of paper as a drawing surface.},
  month = {May},
  year = {2003}
}