COMPARISON BETWEEN Mgii k AND Ca ii H IMAGES RECORDED BY SUNRISE/SuFI
Danilovic, S; Hirzberger, J; Riethmuller, TL; Solanki, SK; Barthol, P; Berkefeld, T; Gandorfer, A; Gizon, L; Knolker, M; Schmidt, W; Rodriguez, JB; Iniesta, JCD
The Astrophysical Journal / 0004-637X / 784 / 201403