@misc{indiciae0085d803ad1e,
  title = {A space radiation shielding code for realistic vehicle geometries},
  author = {Douglass, C. C. and Hill, C. W. and Simpson, K. M.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19650025033},
  note = {Source identifier: 19650025033}
}