M. Suwa, and B. Tversky. Design studies18(4):385-403 (1997)"sketches serve as a 'perceptual interface' through which one can discover non-visual functional relations underlying the visual features." p 401.
M. Suwa, and B. Tversky. Design studies18(4):385-403 (1997)"sketches serve as a 'perceptual interface' through which one can discover non-visual functional relations underlying the visual features." p 401.