Michael Wildt auf Twitter: "Today I received sad mail: My highly respected colleague and very good friend Alf Lüdtke passed away yesterday evening. Not all of you know him, but I am extremely saddened. And I miss him.… https://t.co/g2M0lCKx3J"

https://twitter.com/WildtMichael/status/1090752137188044801

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