1. The measurement of solar irradiance;Forgan,1979
2. Effect of temperature on the Linke-Feussner pyrheliometer;Lamboley,1973
3. Reduction des donnes obteneus avec un pyrheliometre d'angstrom et un pyrheliometre Linke-Feussner;Plazy,1975
4. Active cavity radiometer;Willson;Appl Optics,1973
5. The parameters of atmospheric turbidity;Angstrom;Tellus,1964