@article{250305,
      author = {Kokert, F.},
      url = {http://digitallibrary.un.org/record/250305},
      title = {Automated balancing for the metallurgical, economical and  environmental analysis of production plants : summary /},
      publisher = {UN,},
      recid = {250305},
      pages = {3 p.},
      address = {Geneva :. 1998-02-03},
      year = {1998},
      month = {Feb},
}