2022 Stephanie Stoecker
2020 Michael Frank
2019 Thorsten Näter
2016 Detlef Muckel
2015 Hannu Salonen
2016 Alexander Conrads
2014 Klaus Knoesel
2015 Michael Frank, Edda Klepp
2007 Michael Frank
2022 Stephanie Stoecker
German
2020 Michael Frank
German
2019 Thorsten Näter
German
2016 Detlef Muckel
German
2015 Hannu Salonen
German
2016 Alexander Conrads
German
2014 Klaus Knoesel
German
2015 Michael Frank, Edda Klepp
Sign language
2007 Michael Frank
German