@misc{indiciae34badf5e3ced,
  title = {Strapdown inertial attitude-indication evaluations},
  author = {Gilmore, J. P. and Mckern, R. A.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700066552},
  note = {Source identifier: 19700066552}
}