@article{033-000-00899-6,
      author = {Ethell, Jeffrey L.},
      url = {http://library.usi.edu/record/172175},
      title = {Fuel economy in aviation /},
      publisher = {Scientific and Technical Information Branch, National  Aeronautics and Space Administration :},
      number = {033-000-00899-6},
      recid = {172175},
      pages = {ix, 111 p. :},
      address = {Washington, DC :},
      year = {1983},
}