Universidad de Zaragoza Repository

@article{PérezCalle:41315,
      author        = "Pérez Calle, Begoña and González Álvarez, María
                       Asunción and Zubiaurre Eizaguirre, Julieta María and
                       Giménez Nadal, José Ignacio",
      title         = "{}",
      year          = "2012",
}