@misc{indiciae29eec942a3ab,
  title = {Radiation shielding estimates for manned Mars space flight},
  author = {Dudkin, V. E. and Kovalev, E. E. and Kolomensky, A. V. and Sakovich, V. A. and Semenov, V. F. and Demin, V. P. and Benton, E. V.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/20040090399},
  note = {Source identifier: 20040090399}
}