@misc{indiciae137ce4930e81,
  title = {Observational evidence for extraterrestrial gamma-ray line sources},
  author = {Jacobson, A. S. and Ling, J. C. and Mahoney, W. A. and Willett, J. B.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780024040},
  note = {Source identifier: 19780024040}
}