Universidad de Zaragoza Repository

@article{UsónSardaña:44969,
      author        = "Usón Sardaña, Antonio and García Gracia, Miguel and
                       Letosa Fleta, Jesús and Arroyo García, Juan Bautista and
                       Comech Moreno, María Paz",
      title         = "{}",
      year          = "2011",
}