@misc{indiciaed52485c07459,
  title = {Optimal thruster configurations for the GP-B spacecraft},
  author = {Wiktor, P. and Debra, D. and Chen, J.-H.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910042010},
  note = {Source identifier: 19910042010}
}