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Farquhar, G. D., von Caemmerer, S. V., & Berry, J. A. (1980). A biochemical model of photosynthetic CO 2 assimilation in leaves of C 3 species.  Planta ,  149 (1), 78-90. Carbon assimilation is mainly controlled by electron, light which is reducing electron from water molecule, O2 and CO2. They consist of the model.