1. Blackbodies as absolute radiation standards;Bedford,1970
2. “Handbook of Tables for Applied Engineering Science,”,1973
3. “Modern Optics.”;Brown,1965
4. An integrating hemisphere (artificial sky) for calibration of meteorological pyranometers;Drummond;Sol. Energy,1966
5. Calibration of solar radiation equipment at the U.S. Weather Bureau;Hill;Sol. Energy,1966