- Author: Charlotte de Mille
- Language: English
- Year: 2011
- Author: Emons Hans
- Language: German
- Year: 2014
- Author: Frisch Walter
- Language: English
- Year: 2005
- Author: Gilman Sander L., Bohlman Philip Vilas
- Language: English
- Year: 2008
- Author: Leppert Richard D
- Language: English
- Year: 2015