@misc{indiciaeadae330883de,
  title = {Ionospheric Measurements Using Environmental Sampling Techniques},
  author = {Bourdeau, R. E. and Jackson, J. E. and Kane, J. A. and Serbu, G. P.},
  year = {1960},
  url = {https://ntrs.nasa.gov/citations/19980228008},
  note = {Source identifier: 19980228008}
}