Antonio Gómez-Corral, Complutense University of Madrid, Spain

Francisco Javier López Lorente, Univeristy of Zaragoza, Spain

Carmen Minuesa Abril, University of Extremadura, Spain

Inés del Puerto García, University of Extremadura, Spain

M. Dolores Ruiz Medina, University of Granada, Spain

Gerardo Sanz Sáiz, University of Zaragoza, Spain 

Javier Villarroel, University of Salamanca, Spain

Martín Alcalde Navarro, University of Zaragoza, Spain

Miguel Lafuente Blasco, University of Zaragoza, Spain

Francisco Javier López Lorente, Univeristy of Zaragoza, Spain

Carmen Minuesa Abril, University of Extremadura, Spain

M. Dolores Ruiz Medina, University of Granada, Spain

Gerardo Sanz Sáiz, University of Zaragoza, Spain 

Javier Villarroel, University of Salamanca, Spain