@misc{indiciaedeee1ee14a30,
  title = {An X-ray shadowgraph to locate transient high-energy celestial sources},
  author = {Fishman, G. J. and Parnell, T. A. and Rygg, T. A. and Gregory, J. C.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750020752},
  note = {Source identifier: 19750020752}
}