1. Björkman, O., R.W. Pearcy, A.T. Harrison & H.A. Mooney (1972): Photosynthetic adaptation to high temperatures: a field study in Death Valley, California. Science, 175: 786–789.
2. Black, C.C. (1973): Photosynthetic carbon fixation in relation to net CO2 uptake. Annu. Rev. Plant Physiol, 24: 253–286.
3. Bull, T.A. (1969): Photosynthetic efficiencies and photorespiration in Calvin cycle and C4-di-carboxylic plants. Crop Sci., 9: 726–729.
4. Gifford, R.M. (1974): A comparison of potential photosynthesis, productivity and yield of plant species with differing photosynthetic metabolism. Aust. J. Plant. Physiol, 1: 107–117.
5. Kluge, M. (1971): Studies on CO2 fixation by succulent plants in the light. In Hatch, M.D., Osmond, C.B., & R.O. Slatyer (Eds.): Photosynthesis and Photorespiration. Pp. 283–287. Wiley — Interscience. N.Y.