Awarded honorary doctor of the University of Duisburg-Essen (1990).
Text from Wikipedia, available under CC BY-SA 4.0.
- #wikidata
- #award
- #achievement
Awarded honorary doctor of the University of Duisburg-Essen (1990).
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-23 from Wikipedia. The archived copy is preserved so this citation survives link rot.