Martinez, R., A. Calatrava Garcia (DEP), M. Ángel Marrero Jimeno, and I. Olmedo Palomino. “A European Army: So Near and Yet so Far”. 2024. Revista CIDOB d’Afers Internacionals, no. 137, Oct. 2024, pp. 15-44, https://recyt.fecyt.es/index.php/cidob/article/view/110237.