@misc{indiciae7034f68456d1,
  title = {Ionospheric composition measurements with an RF impedance probe},
  author = {Miller, E. K. and Schulte, H. F., Jr.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680023725},
  note = {Source identifier: 19680023725}
}