@misc{indiciae239699c91be5,
  title = {A method of evaluating radiation risks for manned space flights.},
  author = {J Billingham and D E Robbins and D Ewing},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/6022213/},
  note = {Source identifier: 6022213}
}