@misc{indiciae222009a5ca20,
  title = {X-rays from the eclipsing pulsar 1957+20},
  author = {Fruchter, A. S. and Bookbinder, J. and Garcia, M. R. and Bailyn, C. D.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930032371},
  note = {Source identifier: 19930032371}
}