- Author: Tor Sellström, Tor Sellström
- Language: English
- Year: 2015
- Author: Tor Sellström, Júlio Monteiros
- Language: Portuguese
- Year: 2008
- Author: Tor Sellström, Lennart Wohlgemuth
- Language: Swedish
- Year: 1995
- Author: Tor Sellström
- Language: English
- Year: 1999