- Author: Antonio Enrique Pérez Luño
- Language: Portuguese
- Year: 2012
- Author: Antonio-Enrique Pérez Luño
- Language: Spanish
- Year: 2007
- Author: Antonio-Enrique Pérez Luño
- Language: Spanish
- Year: 2007
- Author: Antonio Enrique Pérez Luño
- Language: Spanish
- Year: 2009