@article{1384654,
      author = {Crailsheim, Eberhard, and Elizalde Pérez-Grueso, María  Dolores,},
      url = {http://library.usi.edu/record/1384654},
      title = {The representation of external threats : from the Middle  Ages to the modern world /},
      recid = {1384654},
      pages = {1 online resource (482 pages).},
}