@misc{indiciaeb4ecedcd9bca,
  title = {Grid-Sphere Electrodes for Contact with Ionospheric Plasma},
  author = {Stone, Nobie H. and Poe, Garrett D.},
  year = {2010},
  url = {https://ntrs.nasa.gov/citations/20100036552},
  note = {Source identifier: 20100036552}
}