@misc{indiciae4038a00491e2,
  title = {Application of Kalman filtering techniques to strapdown system inertial alignment},
  author = {Earle B. Crocker and Leonard Rabins},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19700016587},
  note = {Source identifier: 19700016587}
}