@misc{indiciae192cdf49e1fc,
  title = {Computing Gravitational Bumps From Repeating-Orbit Data},
  author = {Wu, Jiun-Tsong and Wu, Sien-Chong and Bertiger, William I.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910000211},
  note = {Source identifier: 19910000211}
}