- Author: Phillips Adam
- Language: English
- Year: 2013
- Author: Rinser Luise
- Language: German
- Year: 1970
- Author: Orth Dominik
- Language: German
- Year: 2016
- Author: Landwehr Achim
- Language: German
- Year: 2016
- Author: Glassman Steve
- Language: English
- Year: 2009
- Author: Partha Ghose
- Language: English
- Year: 2017
- Author: Jan Westerhoff
- Language: English
- Year: 2011
- Author: Marie Dominique Philippe
- Language: French
- Year: 1975