- Author: Lang Christoph, Theodore Petrou
- Language: English
- Year: 2011
- Author: Theodore Petrou
- Language: English
- Year: 2017
- Author: Theodore Petrou
- Language: English
- Year: 2017
- Author: Theodore Petrou
- Language: English
- Year: 2017
- Author: Theodore Petrou
- Language: English
- Year: 2017