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| Herwig Hauser, El Escorial 2010 (Conference in Honor of Sabir Gusein-Zade)| Mathematisches Forschungsinstitut Oberwolfach, https://opc.mfo.de/detail?photo_id=13299| Gert-Martin Greuel, Copyright is MFO| [{Image src='https://www.austria-forum.org/cc/images/slim/by-sa.png' alt='CC BY-SA 2.0 de' align='center' link='https://www.austria-forum.org/cc/by-sa-20.html' target='_blank'}]| Datei:Herwig Hauser.jpg
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