Statistical characterisation of full-disk EUV/XUV solar irradiance and correlation with solar activityJ. Greenhough, S. C. Chapman, R. O. Dendy, V. M. Nakariakov and G. RowlandsA&A, 409 2 (2003) L17-L20DOI: https://doi.org/10.1051/0004-6361:20031292