The university library will be closed from December 23rd, 2023 to January 7th, 2024. From January 8th, 2024, regular opening hours will apply again. Exception: The main medical library and the central library will be open again from January 3rd, 2024. Further information
Gemeinsame Normdatei (GND) im Katalog der Deutschen Nationalbibliothek 
Virtual International Authority File (VIAF)