@article{449181,
      url = {http://digitallibrary.un.org/record/449181},
      title = {Evaluation of cost-effective systems for railway  level-crossing protection},
      publisher = {UN,},
      recid = {449181},
      pages = {vii, 126 p. :},
      address = {New York :. 2000},
      year = {2000},
}