1. A treatise on order in engineering design research;Horvath;Research in Engineering Design,2004
2. Sketches of Thought;Goel,1995
3. What do sketches say about thinking?;Tversky,2002
4. Computer-aided sketching to capture preliminary design;Plimmer,2002
5. Sketching now;Jonson;International Journal of Art & Design Education,2002