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4. Weizer, V. G.: Consideration of Design and Calibration of Terrestrial Reference Solar Cells. Terrestrial Photovoltaic Measurements - II. NASA CP-2010, 1976, pp. 203–222.
5. Klucher, Thomas M.: Sensitivity of Solar-Cell Performance to Atmospheric Variables: I - Single Cell. Terrestrial Photovoltaic Measurements - II. NASA CP-2010, 1976, pp. 247–258.