1. An essay towards a new theory of vision;Berkeley,1901
2. Integration of depth cues in the kinetic depth effect: More than the sum of the parts?;Blackburn;Investigative Ophthalmology and Visual Science,1993
3. Clouds in a glass of beer: Simple experiments in atmospheric physics;Bohren,1987
4. At what altitude does the horizon cease to be visible?;Bohren;American Journal of Physics,1986
5. Sensation and perception;Coren,1989