- Author: Isabell Eva Baumann, Fachinformationsdienst Benelux
- Language: German
- Year: 2019
- Author: Christina Lammer, Fachinformationsdienst Benelux
- Language: German
- Year: 2020
- Author: Fernand Fehlen, Andreas Heinz, Fachinformationsdienst Benelux
- Language: German
- Year: 2016