Paul W. Barnes, Stephan D. Flint, Martyn M. Caldwell, Photosynthesis Damage and Protective Pigments in Plants from a Latitudinal Arctic/Alpine Gradient Exposed to Supplemental UV-B Radiation in the Field, Arctic and Alpine Research, Vol. 19, No. 1 (Feb., 1987), pp. 21-27
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Barnes et al. (1987) studied this question.
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