@article{1411144,
      author = {O'Callaghan, Joseph F.,},
      url = {http://library.usi.edu/record/1411144},
      title = {Alfonso X, the Justinian of his age : law and justice in  thirteenth-century Castile /},
      recid = {1411144},
      pages = {1 online resource (391 pages).},
}