@misc{indiciae64151c50e0d0,
  title = {Galactic arm structure and gamma-ray astronomy},
  author = {Bignami, G. F. and Fichtel, C. E.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19740047193},
  note = {Source identifier: 19740047193}
}