@article{242225,
      note = {Includes an example of message documentation for the UNSM  invoice message.},
      url = {http://digitallibrary.un.org/record/242225},
      title = {Trade data interchange protocols : general introduction  for United Nations Standard Messages (UNSMs) : note /},
      publisher = {UN,},
      recid = {242225},
      pages = {vi, 12, iv, 33 p. :},
      address = {Geneva :. 1989-12-19},
      year = {1989},
      month = {Dec},
}