@article{ValleMelendo:43977,
      author        = "Valle Melendo, Jesus Javier del and Loren Zaragozano,
                       Francisco Javier and Iglesia Pedraza, Oscar de la and
                       Urbiztondo Castro, Miguel Ángel and Fonts Amador, Maria
                       Isabel and Acero Oliete, Alejandro Jesus",
      title         = "{}",
      year          = "2011",
}