@misc{indiciae2b8e4594fa02,
  title = {Optically thick X-ray transfer - The shell game},
  author = {Langer, S. H. and Ross, R. R. and Mccray, R.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780055512},
  note = {Source identifier: 19780055512}
}