@misc{indiciae23e2d6ae7402,
  title = {A timed-correlated four-link Doppler Tracking system},
  author = {Vessot, R. F. C. and Levine, B. W.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780025059},
  note = {Source identifier: 19780025059}
}