Links
- https://www.iak.uni-bonn.de/christliche-archaeologie/en/research/educational-projects/die-krypta-von-san-marco-in-venedig
- https://www.iak.uni-bonn.de/christliche-archaeologie/en/research/late-antique-and-byzantine-sacred-architecture/bauplastik-cumanin-camii
- https://www.iak.uni-bonn.de/christliche-archaeologie/en/research/late-antique-and-byzantine-sacred-architecture
- https://www.iak.uni-bonn.de/christliche-archaeologie/en/research/field-research/die-konstantinische-bischofskirche-von-ostia