Universidad de Zaragoza Repository

@article{OlleroOjeda:40058,
      author        = "Ollero Ojeda, Alfredo and Echeverría Arnedo, María
                       Teresa and Peña Monné, José Luis and Sebastián López,
                       María and Nadal Romero, María Estela",
      title         = "{}",
      year          = "2013",
}