@misc{indiciaebe9aa981b992,
  title = {Ground-Based GPS as a Calibration/Validation Tool for Tropospheric Sensing Instruments},
  author = {Bar-Sever, Y. E. and Haines, B. J. and Keihm, S. J.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20000053502},
  note = {Source identifier: 20000053502}
}