@misc{indiciae559b7ccdfa9a,
  title = {Efficient On-Orbit Singularity-Free Geopotential Estimation},
  author = {Amert, Joel and Anzalone, Evan J.},
  year = {2019},
  url = {https://ntrs.nasa.gov/citations/20190002098},
  note = {Source identifier: 20190002098}
}