- Author: Helmut Heit (editor), Andreas Urs Sommer (editor)
- Language: German
- Year: 2020
- Author: Helmut Heit (editor), Lisa Heller (editor)
- Language: German
- Year: 2013
- Author: Helmut Heit (editor), Sigridur Thorgeirsdottir (editor)
- Language: German
- Year: 2016
- Author: Helmut Heit (editor), Sigridur Thorgeirsdottir (editor)
- Language: German
- Year: 2016
- Author: Helmut Heit (editor), Günter Abel (editor), Marco Brusotti (editor)
- Language: German
- Year: 2011