1. Perspective and the viewpoint;Adams;Leonardo,1972
2. On painting (J. Spencer, Trans.);Alberti,1966
3. The illusion of depth from single pictures;Ames;Journal of the Optical Society of America,1925
4. Situations and attitudes;Barwise,1983
5. Optic array determinants of apparent distance and size in pictures;Bengston;Journal of Experimental Psychology: Human Perception and Performance,1980