1. Dayton R. E. Brown, Natural Illumination Charts, Report No. 374–1, BuShips, Department of the Navy, September 1952.
2. J. W. Chamberlain, Physics of the Aurora and Airglow, Academic Press, New York (1961).
3. Lawrence Dunkelman, “Horizontal Attenuation of Ultraviolet and Visible Light by the Lower Atmosphere,” Naval Research Laboratory Report 4031, September 1952.
4. Lawrence Dunkelman and R. Scolnik, “Solar Spectral Irradiance and Vertical Atmos-pheric Attenuation in the Visible and Ultraviolet,” J. Opt. Soc. Am. 49 (4), 356–367(April 1959 ).
5. H. P. Gush and A. V. Jones, “Infrared Spectrum of the Night Sky From 1.0 to 2.0,” Atmos. Terrestr. Phys. 7, 285–291 (1955).