@misc{indiciaec4ff203e5398,
  title = {Quaternion normalization in spacecraft attitude determination},
  author = {Deutschmann, Julie and Bar-Itzhack, Itzhack and Galal, Ken},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19920069431},
  note = {Source identifier: 19920069431}
}