(1)
Hopmans, A. Netherlands The Hague: RKD – The Netherlands Institute for Art History. In State of the Art Archives: International Conference on Archives Documenting Modern and Contemporary Art; Institut für moderne Kunst, Z. basis wien,, Ed.; arthistoricum.net-ART-Books: Heidelberg, 2019; pp. 173-188. https://doi.org/10.11588/arthistoricum.426.c6250.