@misc{indiciae5fea7fa00d77,
  title = {Precise gimballing mechanism},
  author = {Ferrera, J. D. and Johnson, K. G. and Perkins, G. S.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690000270},
  note = {Source identifier: 19690000270}
}