@misc{indiciaed6ee0bb3ad28,
  title = {Galaxies and gamma-ray astronomy},
  author = {Bignami, G. F. and Fichtel, C. E. and Hartman, R. C. and Thompson, D. J.},
  year = {1979},
  url = {https://ntrs.nasa.gov/citations/19800054375},
  note = {Source identifier: 19800054375}
}