@misc{indiciae6eb639dfe44a,
  title = {Assessment of Global TEC Mapping Using a Three-Dimensional Electron Density Model},
  author = {Lindqwister, U. and Wilson, B. and Pi, X. and Sparks, L. and Iijima, B. and Mannucci, A.},
  year = {1999},
  url = {https://ntrs.nasa.gov/citations/20210003191},
  note = {Source identifier: 20210003191}
}