- Author: Emily Manktelow
- Language: English
- Year: 2016
- Author: Anthony Everett Thomas Hofweber
- Language: English
- Year: 2000
- Author: Würtenberger Loretta
- Language: German
- Year: 1999
- Author: Tegethoff Carsten
- Language: German
- Year: 2001
- Author: Seitz Alexander
- Language: German
- Year: 1997