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https://www.rug.nl/news/2018/09/farewell-president-sibrand-poppema President Sibrand Poppema’s farewell | News articles | University of Groningen Oct 1, 2018 - On Thursday 27 September, Professor Sibrand Poppema officially retired from his position as President of the University of Groningen for ten years. A... university of groningennews articlespresidentsibrandfarewell