Krause, G. Heinrich, Jahns, Peter, Virgo, Aurelio, Garcia, Milton N., Aranda, Jorge E., Wellmann, Eckard, and Winter, Klaus. 2007. "Photoprotection, Photosynthesis and Growth of Tropical Tree Seedlings Under Near-Ambient and Strongly Reduced Solar Ultraviolet-B Radiation." Journal of Plant Physiology, 164, (10) 1311–1322. https://doi.org/10.1016/j.jplph.2006.09.004.