@misc{indiciae19275883fdb4,
  title = {Inversion of Gravity Fields from the Spacecraft Orbital Data Using an Adjoint Operator Approach},
  author = {Ustinov, E.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20210002714},
  note = {Source identifier: 20210002714}
}