@misc{indiciae07eb89182dc2,
  title = {Ionizing program environment at the Mars surface},
  author = {Simonsen, Lisa C. and Nealy, John E. and Townsend, Lawrence W. and Wilson, John W.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910043026},
  note = {Source identifier: 19910043026}
}