@misc{indiciae815d5441e40c,
  title = {NAVSIM 2: A computer program for simulating aided-inertial navigation for aircraft},
  author = {Bjorkman, William S.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19880003096},
  note = {Source identifier: 19880003096}
}