@article{UrbinaPérez:45560,
      author        = "Urbina Pérez, Olga and López Cabeza, Jesús and Murillo
                       Luna, Josefina Lucía and Camón Cala, Juan and Ezpeleta
                       Tarin, Jesús Manuel",
      title         = "{}",
      year          = "2010",
}