@article{248097,
      url = {http://digitallibrary.un.org/record/248097},
      title = {Performance appraisal system.},
      publisher = {UN,},
      recid = {248097},
      pages = {8 p.},
      address = {[New York] :. 1997-12-09},
      year = {1997},
      month = {Dec},
}