@article{94513,
      url = {http://digitallibrary.un.org/record/94513},
      title = {Trade data interchange protocols : enhancement of the  Guidelines for Trade Data Interchange (GTDI) : proposal for  a UN/ECE commercial invoice message /},
      publisher = {UN,},
      recid = {94513},
      pages = {19 p.},
      address = {Geneva :. 1986-07-14},
      year = {1986},
      month = {Jul},
}