Diamond, Stephen A., Peter C. Trenham, Michael J. Adams, Blake R. Hossack, Roland A. Knapp, Stacy L. Stark, David Bradford, Stephen P. Corn, Ken Czarnowski, Paul D. Brooks et al. "Estimated Ultraviolet Radiation Doses in Wetlands in Six National Parks." Ecosystems 8, no. 5 (2005): 462-477.