@article{94976,
      url = {http://digitallibrary.un.org/record/94976},
      title = {Concept of transport chains /},
      publisher = {UN,},
      recid = {94976},
      pages = {9 p.},
      address = {Geneva :. 1990-06-29},
      year = {1990},
      month = {Jun},
}