@misc{indiciaeaa0c535122c9,
  title = {Note on apparent systematic and periodic errors in Geosat orbits},
  author = {Sirkes, Ziv and Wunsch, Carl},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900058750},
  note = {Source identifier: 19900058750}
}