Li, J.-H., Gale, M., Volokita, M., Sinai, T. and Novoplansky, A.  2000.  Effect of leaf variegation on acclimation of photosynthesis and growth response to elevated ambient CO2.  Journal of Horticultural Science & Biotechnology 75: 679-683.

Saxe, H.  1986.  Effects of NO, NO2 and CO2 on net photosynthesis, dark respiration and transpiration of pot plants.  New Phytologist 103: 185-197.