1. Solar Polar Imager, http://umbra.nascom.nasa.gov/SEC/secr/missions/polarimg.html, January 2004.
2. Personal communication with Dr. Greg Garbe/NASA/MSFC.
3. Edwards, D., Hubbs,W., Gray, P.Wertz, G., Hoppe, D., Nehls, M., Semmel, C., Albarado, T., and Hollerman,W. (2003) In Proceedings of the 9th International Symposium on Material in a Space Environment, Noordwijk, The Netherlands, ESA Publications, Noordwijk, The Netherlands June 2003, pp. 16–20.
4. Albarado, T., Hollerman, W., Edwards, D., Hubbs, W., and Semmel, C. (2003) In Proceedings of ISEC 2003: 2003 International Solar Energy Conference, Hawaii, 15–18 March 2003.
5. Edwards, D., Hubbs, W., Stanaland, T., Hollerman, A., and Altstatt, R. (2002) In Proceedings of SPIE Photonics for Space Environments VIII, Vol. 4823, 2002.