Chatzistergos, T., Solanki, S. K., Krivova, N. A., Ermolli, I., Giorgi, F., & Yeo, K. L. (2017). Relating photospheric magnetic field to Ca II K intensity. Talk presented at Rocks \& Stars II. Göttingen, Germany. 2017-09-13 - 2017-09-16.