@misc{indiciae6de19650b1a5,
  title = {Filtering Methods for Error Reduction in Spacecraft Attitude Estimation Using Quaternion Star Trackers},
  author = {Calhoun, Philip C. and Sedlak, Joseph E. and Superfin, Emil},
  year = {2011},
  url = {https://ntrs.nasa.gov/citations/20180001358},
  note = {Source identifier: 20180001358}
}