- Author: Kjetil Tronvoll, Tobias Hagmann
- Language: English
- Year: 2011
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- Language: English
- Year: 2010
- Author: Tor Sellström, Tor Sellström
- Language: English
- Year: 2015
- Author: Abbas Gnamo
- Language: English
- Year: 2014
- Author: Sandra Evers, Gwyn Campbell, Michael Lambek
- Language: English
- Year: 2013