@misc{indiciaecfc612f213e5,
  title = {Gravity Fields from CHAMP Mission Data},
  author = {Lemoine, Frank G. and Luthcke, S. B. and Cox, C. M. and Rowlands, D. D. and Thompson, B. F. and Chinn, D. S. and Williams, T. A. and Nerem, R. S.},
  year = {2002},
  url = {https://ntrs.nasa.gov/citations/20030020802},
  note = {Source identifier: 20030020802}
}