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- Language: German
- Year: 2015

- Author: Elke Ariëns (editor), Helmut König (editor), Manfred Sicking (editor)
- Language: German
- Year: 2014

- Author: Helmut König (editor), Manfred Sicking (editor)
- Language: German
- Year: 2015

- Author: Henrique Ricardo Otten (editor), Manfred Sicking (editor), Julia Schmidt (editor)
- Language: German
- Year: 2014

- Author: Winfried Brömmel (editor), Helmut König (editor), Manfred Sicking (editor)
- Language: German
- Year: 2015