- Author: Mario Javier Sabán Cuño
- Language: Spanish
- Year: 2018
- Author: Howard Schwartz
- Language: English
- Year: 1994
- Author: Nick Farrell
- Language: English
- Year: 2014
- Author: David Allen Hulse
- Language: Spanish
- Year: 2000
- Author: Claudia Brink Lucinda Martin Cecilia Muratori
- Language: English
- Year: 2019
- Author: Ars aurora
- Language: English
- Year: 2020
- Author: Wilhelm Schmidt-Biggemann, Aeschbach-Stiftung
- Language: German
- Year: 2012
- Author: Wilhelm Schmidt-Biggemann, Aeschbach-Stiftung
- Language: German
- Year: 2012
- Author: Dominique Aubier
- Language: French
- Year: 2005