@misc{indiciae79d2b6e2ec00,
  title = {Nonlinear Attitude Filtering Methods},
  author = {F Landis Markley and John L Crassidis and Yang Cheng},
  year = {2005},
  url = {https://ntrs.nasa.gov/citations/20050212421},
  note = {Source identifier: 20050212421}
}