Schwenn, R. Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society; MPI for Aeronomy, Max Planck Institute for Solar System Research, Max Planck Society;
Schwenn, R. (1978). Neues von der Sonne. Kultur und Technik, Zeitschrift des Deutschen Museums, München, 8, 8-13.