@article{N 91-17073 - N 91-17105,
      note = {Distributed to depository libraries in microfiche.},
      author = {Stengle, Thomas.},
      url = {http://library.usi.edu/record/179778},
      title = {Flight Mechanics/Estimation Theory Symposium, 1990  proceedings of a symposium sponsored by NASA Goddard Space  Flight Center and held at Goddard Space Flight Center,  Greenbelt, Maryland, May 22-24, 1990 / [microform] :.  Flight Mechanics/Estimation Theory Symposium},
      publisher = {National Aeronautics and Space Administration, Office of  Management, Scientific and Technical Information Division  ;},
      number = {N 91-17073 - N 91-17105},
      recid = {179778},
      pages = {1 v.},
      address = {[Washington, DC] :},
      year = {1991},
}