16 December 2020 (Webinar)
26 November 2020 (Webinar)
26 Nov. 2020, Essen, Germany
22 September 2020, 8am CET and 3pm CET, digital
16 June, 16:00-17:00 CET, online
11 - 12 Feb 2020, Hamburg, Germany
21 Nov. 2019, Essen, Germany
19 - 20 Nov. 2019, Aachen, Germany
5 July 2018, Essen, Germany
3. Mai 2018, Essen
