@article{1374459,
      author = {Rio, Knut Mikjel. and Smedal, Olaf H.},
      url = {http://library.usi.edu/record/1374459},
      title = {Hierarchy: persistence and transformation in social  formations /},
      publisher = {Berghahn Books,},
      recid = {1374459},
      pages = {379 p.},
      address = {New York :},
      year = {2009},
}