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2. Retinal mechanisms of colour vision;Abramov,1970
3. Saturation of the rod mechanism of the retina at high levels of stimulation;Aguilar;Optica Acta,1954
4. What is it that confines in a world without color?;Alpern;Investigative Ophthalmology,1974
5. Variation in the action spectrum of erthyrolabe among deuteranopes;Alpern;Journal of Physiology,1977