Type: Journal, Article Title: Solar Radiative Output and its Variability: Evidence and Mechanisms Author(s): Fröhlich, C.; Lean, J. Date: 2004 Journal (full): Astronomy & Astrophysics Review Volume: 12 Start Page: 273 End Page: 320 Link: http://adsabs.harvard.edu/abs/2004A%26ARv..12..273F