- Author: Carla van Boxtel (editor), Maria Grever (editor), Stephan Klein (editor)
- Language: English
- Year: 2016
- Author: Carla van Boxtel, Maria Grever, Stephan Klein
- Language: English
- Year: 2016
- Author: Herbert Kubicek Stephan Klein (auth.)
- Language: German
- Year: 1995