@article{501573,
      url = {http://digitallibrary.un.org/record/501573},
      title = {Research activities in the field of railway transport :  addendum 2 /},
      publisher = {UN,},
      recid = {501573},
      pages = {[1] p.},
      address = {Geneva :. 2003-07-31},
      year = {2003},
      month = {Jul},
}