@article{960436,
      author = {Bertea, Stefano,},
      url = {http://library.usi.edu/record/960436},
      title = {The normative claim of law /},
      publisher = {Hart Pub.,},
      recid = {960436},
      pages = {vi, 307 p.},
      address = {Oxford ;},
      year = {2009},
}