@misc{indiciaefb37f8f7c92c,
  title = {Positron annihilation in solar flares},
  author = {Crannell, C. J. and Ramaty, R. and Werntz, C.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760043966},
  note = {Source identifier: 19760043966}
}