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Does anyone have information about if/when/where he received a doctorate? Or is there some other reason people are calling him Dr. ? Ranze (talk) 06:15, 21 August 2016 (UTC)[reply]
As many reliable sources confirm, such as this book, he received his PhD at the University of Cologne. Google is quite easy to use, and it took me less than 30 seconds to verify this. Cullen328Let's discuss it 06:38, 21 August 2016 (UTC)[reply]