Borrero Santiago, J. M.: The fine structure of the sunspot penumbra. Dissertation, Georg-August-Universität Göttingen (2004)

Okunev, O.: Observations and modeling of polar faculae on the sun. Dissertation, Georg-August-Universität Göttingen (2004)

Shelyag, S.: Spectro-polarimetric diagnostics of magneto-convection simulations of the solar photosphere. Dissertation, Georg-August-Universität Göttingen (2004)