- Author: Christina Morina, Marianne Birthler, Norbert Frei, Philipp Ther, Ton Nijhuis
- Language: German
- Year: 2021
- Author: Christina Morina (editor), Krijn Thijs (editor)
- Language: English
- Year: 2018
- Author: Christina Morina
- Language: English
- Year: 2023
- Author: Ulrich Bongertmann Beatrix Bouvier Gisbert Gemein Christina Morina Thomas Welskopp
- Language: German
- Year: 2018
- Author: Christina Morina
- Language: English
- Year: 2011