1. Geography 474: Energy Interactions with the Atmosphere and at the Surfacehttp://www.udel.edu/Geography/DeLiberty/Geog474/geog474_energy_interact.html
2. CHAPTER 3 Energy Sources, Transfers and Transformations: Terrestrial Radiationhttp://atlantic.evsc.virginia.edu/~bph/AW_Book_Spring_96/AW_Book_29.html
3. Raman spectroscopic mapping for the analysis of solar radiation induced skin damage
4. Light Source Spectrum Wavelength Rangeshttp://www.ldgi.com/technology-learning-center/uv-light/typical-light-source-spectrum/