Chatzistergos, T., Ermolli, I., Solanki, S. K., & Krivova, N. A. (2016). The potential of historical spectroheliograms for Sun-climate studies. Talk presented at 9th IAGA - ICMA/IAMAS - ROSMIC/VarSITI/SCOSTEP workshop on long-term changes and trends in the atmosphere. Kühlungsborn, Germany. 2016-09-19 - 2016-09-23.