@techreport{tech200513,
  title = {Sketching 3D Scene Projections},
  author = {Patrick Coleman and Leon Barrett and Cindy Grimm and Karan Singh},
  number = {2005-13},
  institution = {Washington University in St. Louis},
  school = {Department of Computer Science and Engineering},
  note = {Published in Graphite 2005 as 3D Screen Space Widgets},
  month = {December},
  year = {2005}
}