- Author: Carsten Levisen, Sophia Waters
- Language: English
- Year: 2017
- Author: Carsten Levisen
- Language: English
- Year: 2012
- Author: Peter Bakker, Finn Borchsenius, Carsten Levisen, Eeva Sippola
- Language: English
- Year: 2017
- Author: Carsten Levisen
- Language: English
- Year: 2012