Abdussamatov H. (2004) About the Long - Term Coordinated Variations of the Activity, Radius, Total Irradiance of the Sun and the Earth's Climate, International Astronomical Union, DOI: 10.1017 / S1743921304006775, 541 - 542. (mpra.ub.uni-muenchen.de)
1992 S.L. Baliunas, et al., «Long - Term Variability of Solar Total Irradiance: Studies of Solar - Type Stars.» (history.aip.org)
Recently (Krivova et al. 2009b) the theoretical SATIRE (Spectral And Total Irradiance REconstruction)(Krivova et al. 2003; Krivova & Solanki 2008) model and SUSIM (Solar Ultraviolet Spectral Irradiance Monitor) measurements were used to reconstruct the solar UV irradiance back to 1974. (aanda.org)