
- Author: Stephanie Borgert (auth.)
- Language: German
- Year: 2012

- Author: Thomas Epping (auth.)
- Language: German
- Year: 2011

- Author: Zhong Ying Low Sui Pheng (auth.)
- Language: English
- Year: 2014

- Author: Bogdan Lent (auth.)
- Language: English
- Year: 2013

- Author: Zhong Ying Low Sui Pheng (auth.)
- Language: English
- Year: 2014