@article{242533,
      url = {http://digitallibrary.un.org/record/242533},
      title = {Productivity in rail transport /},
      publisher = {UN,},
      recid = {242533},
      pages = {6 p. :},
      address = {Geneva :. 1997-07-24},
      year = {1997},
      month = {Jul},
}