@misc{indiciaec41406b24a5f,
  title = {Modulated spectral activity (MSA) - Implications for planetary radio sources},
  author = {Thieman, James R. and Alexander, Joseph K. and Staelin, David H.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890052600},
  note = {Source identifier: 19890052600}
}