@misc{indiciae0e6faa3c0148,
  title = {The gravity probe B relativity gyroscope program},
  author = {Everitt, C. W. Francis and Parkinson, B. W. and Turneaure, J. P.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900010644},
  note = {Source identifier: 19900010644}
}