@article{Callado-Muñoz:106610,
      author        = "Callado-Muñoz, F.J. and Fernández Olmos, M. and
                       Ramírez-Alesón, M. and Utrero-González, N.",
      title         = "{Characterisation of Technological Collaborations and
                       Evolution in the Spanish Defence Industry}",
      year          = "2022",
}