1. Company P, Contero M, Varley P, Aleixos N, Naya F (2009) Computer-aided sketching as a tool to promote innovation in the new product development process. Comput Ind 60:592–603
2. Plimmer B, Apperley M (2002) Computer aided sketching to capture preliminary design. Proceedings of the 3rd Australasian User Interfaces Conference. Melbourne, 7:9–12
3. Goldschmidt G (2003) The backtalk of self-generated sketches. MIT, Cambridge, 19(1):72–88
4. Sezgin TM, Davis R (2004) Handling overtraced strokes in hand-drawn sketches. Proceedings of the AAAI Spring Symposium Series: making pen-based interaction intelligent and natural. Washington, DC, pp 141–144
5. Ku DC, Qin SF, Wright DK (2006) Interpretation of overtracing freehand sketching for geometric shapes. Proceedings of WSCG’ 2006 Conference in Central Europe on computer graphics, visualization and computer vision. Plzen, Czech Republic, pp 263–270