@article{252507,
      recid = {252507},
      author = {Bergquist, Charles W. and Peñaranda, Ricardo. and Sánchez  G., Gonzalo.},
      title = {Violence in Colombia, 1990-2000 : waging war and  negotiating peace /},
      publisher = {SR Books,},
      address = {Wilmington, Del. :},
      pages = {xxv, 300 p. ;},
      year = {2001},
      url = {http://library.usi.edu/record/252507},
}