Universidad de Zaragoza Repository

@article{PérezCalle:44277,
      author        = "Pérez Calle, Begoña and Zubiaurre Eizaguirre, Julieta
                       María and Pérez Ximenez De Embún, Domingo and Giménez
                       Nadal, José Ignacio",
      title         = "{}",
      year          = "2011",
}