- Author: Kristian Berg
- Language: German
- Year: 2019
- Author: Kristian Berg
- Language: German
- Year: 2019
- Author: Kristian Berg
- Language: English
- Year: 2020
- Author: Kristian Berg
- Language: English
- Year: 2020
- Author: Kristian Berg
- Language: English
- Year: 2020
- Author: Kristian Berg Harpviken (auth.)
- Language: English
- Year: 2009
- Author: Kristian Berg
- Language: English
- Year: 2011
- Author: Kristian Berg Harpviken
- Language: English
- Year: 2009