Köhne, Eckart. “Mut Zur Transparenz! Dare to Be Transparent!”. Transparentes Museum: Dokumentation, Reflexion, Evaluation Und Kontext Eines Pilotprojektes, edited by Annabelle Görgen-Lammers, arthistoricum.net-ART-Books, 2019, pp. 13-14, https://doi.org/10.11588/arthistoricum.533.c7419.