1. Solar radiation monitoring at Dhahran Solar Laboratory;Nimmo;RI/UPM Report SOL-R-2,1980
2. IGY Instruction Manual, Part V: Radiation instruments and manuals.
3. The solar spectrum at typical clear weather days;Bower;Solar Energy,1977
4. Spectral distribution of solar radiation at the earth's surface;Gates;Science,1966
5. Radiation in the Atmosphere;Kondratyev,1969