@article{361573,
      url = {http://digitallibrary.un.org/record/361573},
      title = {Lecture notes on logical foundations for duration  calculus},
      publisher = {UN University :},
      recid = {361573},
      pages = {i, 45 p.},
      address = {Tokyo :. 1993-08},
      year = {1993},
      month = {Aug},
}