Image: Eckmann Hilton Serre Haefliger

Description: From left: Beno Eckmann, Peter Hilton, Jean-Pierre Serre, André Haefliger, 2007 in Zürich (90th birthday of Eckmann)
Title: Eckmann Hilton Serre Haefliger
Credit: Mathematisches Forschungsinstitut Oberwolfach, https://opc.mfo.de/detail?photo_id=9798
Author: Gert-Martin Greuel, Copyright is MFO
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Usage Terms: Creative Commons Attribution-Share Alike 2.0 de
License: CC BY-SA 2.0 de
License Link: https://creativecommons.org/licenses/by-sa/2.0/de/deed.en
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