@article{400942,
      recid = {400942},
      author = {Byers, Michael,},
      title = {Custom, power and the power of rules: international  relations and customary international law /},
      publisher = {Cambridge University Press,},
      address = {Cambridge :},
      pages = {xxii, 250 p.},
      year = {1999},
      url = {http://library.usi.edu/record/400942},
}