Wilhelm, Klaus MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society; Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society;
Wilhelm, K. (2010). Quantitative solar spectroscopy. Astron. Nachrichten, 331, 502-511. doi:10.1002/asna.200911360.