@misc{indiciaef7025e628f82,
  title = {Radio Doppler Navigation of Interplanetary Spacecraft Using Different Data Processing Modes},
  author = {Estefan, J. and Thurman, S.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20210004744},
  note = {Source identifier: 20210004744}
}