@article{93879,
      author = {Christiansen, J.K.},
      url = {http://digitallibrary.un.org/record/93879},
      title = {Long-term forecasting and the risk of ambiguity in  implementation : summary /},
      publisher = {UN,},
      recid = {93879},
      pages = {[1] p.},
      address = {Geneva :. 1990-06-07},
      year = {1990},
      month = {Jun},
}