@misc{indiciaec5e275008628,
  title = {Monitoring Ionospheric Total Electron Content Using the Global GPS Network and Other Satellite Data},
  author = {Mannucci, A. J. and Wilson, B. D. and Yuan, D. -N. and Linqwister, U. J.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/20060042289},
  note = {Source identifier: 20060042289}
}