Reconstruction of spectral solar irradiance since 1700 from simulated magnetograms M. Dasi-Espuig, J. Jiang, N. A. Krivova, S. K. Solanki, Y. C. Unruh and K. L. Yeo A&A, 590 (2016) A63 Published online: 12 May 2016 DOI: 10.1051/0004-6361/201527993