@article{N 90-13413 - N 90-13440,
      note = {Distributed to depository libraries in microfiche.},
      author = {Stengle, Thomas.},
      url = {http://library.usi.edu/record/179738},
      title = {Flight Mechanics/Estimation Theory Symposium, 1989  proceedings of a symposium sponsored by NASA Goddard Space  Flight Center and held at Goddard Space Flight Center,  Greenbelt, Maryland, May 23-24, 1989 / [microform] :.  Flight Mechanics/Estimation Theory Symposium},
      publisher = {National Aeronautics and Space Administration, Office of  Management, Scientific and Technical Information Division  ;},
      number = {N 90-13413 - N 90-13440},
      recid = {179738},
      pages = {1 v.},
      address = {[Washington, DC] :},
      year = {1989},
}