S. Kazadzis, N. Kouremeti, A. Bais, A. Kazantzidis and C. Meleti: Aerosol forcing efficiency in the UVA region from spectral solar irradiance measurements, Annales Geophysicae Vol 27 p.2515-2522 Doi: 10.5194/angeo-27-2515-2009, 2009