- Author: Ethan Mordden
- Language: English
- Year: 2015
- Author: Andrew Gibson
- Language: English
- Year: 2007
- Author: Peter Vincent-Jones
- Language: English
- Year: 2006
- Author: Michael Stolleis
- Language: English
- Year: 2004
- Author: Rune Frederiksen
- Language: English
- Year: 2011
- Author: David Pearson
- Language: English
- Year: 2020