1. Solar Energy Thermal Processes;Duffie,1974
2. Optical properties of the atmosphere;McClatchey,1972
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4. Atmospheric transmittance from 0.25 to 28.5 μm: computer code LOWTRAN-2;Selby;Air Force Cambridge Research Laboratories, AFCRL-72-0745, Environmental Research paper No. 427,1972
5. Solar energy outside the earth's atmosphere;Thekaekara;Solar Energy,1973