1. United Nations Environment Programme (UNEP), Environmental Effects of Ozone Depletion and its Interaction with Climate Change: 2006 Assessment, Ed. J. van der Leun, J. F. Bornman, X. Tang, http://www.unep.org/ozone (2006).
2. A. Thompson, E. A. Early, J. DeLuisi, P. Disterhoft, D. Wardle, J. Kerr, J. Rives, Yongchen Sun, T. Lucas, T. Mestechkina, and P. Neale, "The 1994 North American interagency intercomparison of ultraviolet monitoring spectroradiometers," J. Res. Natl. Inst. Stand. Technol. 102, 279-322 (1997).
3. E. A. Early, Thompson, C. Johnson, J. DeLuisi, P. Disterhoft, D. Wardle, E. Wu, W. Mou, Yongchen Sun, T. Lucas, T. Mestechkina, L. Harrison, J. Berndt, and D. Hayes, "The 1995 North American interagency intercomparison of ultraviolet monitoring spectroradiometers," J. Res. Natl. Inst. Stand. Technol. 103, 15-62, (1998).
4. E. A. Early, A. Thompson, C. Johnson, J. DeLuisi, P. Disterhoft, D. Wardle, E. Wu, W. Mou, J. Ehramjian, J. Tusson, T. Mestechkina, M. Beaubien, J. Gibson, and D. Hayes, "The 1996 North American interagency intercomparison of ultraviolet monitoring spectroradiometers," J. Res. Natl. Inst. Stand. Technol. 103, 449-482 (1998).
5. K. Lantz, P. Disterhoft, E. Early, A. Thompson, J. DeLuisi, P. Kiedron, L. Harrison, J. Berndt, W. Mou, T. J. Erhamjian, L. Cabausua, J. Robertson, D. Hayes, J. Slusser, D. Bigelow, G. Janson, A. Beaubien, and M. Beaubien, "The 1997 North American interagency intercomparison of ultraviolet monitoring spectroradiometers," J. Res. Natl. Inst. Stand. Technol. 107, 19-62 (2002).