@misc{indiciae253c97df66ac,
  title = {Efficient On-Orbit Singularity-Free Geopotential Estimation},
  author = {Amert, Joel and Anzalone, Evan and Oliver, T. Emerson},
  year = {2019},
  url = {https://ntrs.nasa.gov/citations/20190002110},
  note = {Source identifier: 20190002110}
}