1. The receptors of human color vision;Wald;Science,1964
2. Visual pigments in single rods and cones of the human retina;Brown;Science,1964
3. Human color vision and color blindness;Wald;Cold Spring Harbor Symp Quant Biol,1965
4. The molecular basis of visual excitation;Wald;Nature,1968
5. Micro-spectrophotometry of human photoreceptors;Dartnall,1983