@misc{indiciaee809b3934afe,
  title = {Landsat-7 definitive ephemeris: An independent verification of GeoCover-Ortho 1990 positional accuracy},
  author = {Jon D. Dykstra and James C. Storey},
  year = {2004},
  url = {https://pubs.usgs.gov/publication/70263363},
  note = {Source identifier: 70263363}
}