@misc{indiciaef426641f16a5,
  title = {A square root formulation for the combined state-parameter estimator with application to the identification of sailplane performance},
  author = {Froidevaux, M. R. and Hutchinson, C. E.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740017470},
  note = {Source identifier: 19740017470}
}