Retired Professors https://www.geographie.uni-bonn.de/en/research/research-groups/retired-professors https://www.geographie.uni-bonn.de/++resource++plone-logo.svg Retired Professors Count Persons (12) Contact Phone E-Mail Details Prof. Dr. Bernd Diekkrüger In retirement since 01.10.2019 - b.diekkrueger@uni-bonn.de Prof. Dr. Richard Dikau In retirement since 01.03.2016 - ridikau@uni-bonn.de Prof. Dr. Eckart Ehlers In retirement since 01.04.2004 - eckart.ehlers@t-online.de Prof. (em.) Dr. Klaus Fehn In retirement since 01.04.2001 - k.fehn@uni-bonn.de Prof. Dr. Klaus Greve In retirement since 01.08.2023 - klaus.greve@uni-bonn.de Prof. Dr. Reinhold Grotz In retirement since 01.04.2004 - r.grotz@uni-bonn.de Apl. Prof. Dr. Hans Dieter Laux In retirement since 01.04.2007 - hdlaux@uni-bonn.de Prof. Dr. Winfried Schenk In retirement since 01.09.2022 - wschenk@uni-bonn.de Prof. Dr. Helmuth Toepfer In retirement since 01.03.2009 - helmuth.toepfer1@gmx.de Prof. Dr. Sabine Tröger In retirement since 01.04.2020 - troeger@giub.uni-bonn.de Prof. Dr. Claus-Christian Wiegandt In retirement since 01.04.2023 - wiegandt@uni-bonn.de Prof. Dr. Matthias Winiger In retirement since 01.04.2011 - winiger@uni-bonn.de