@misc{indiciae8b423287b349,
  title = {Orbital variability in the eclipsing pulsar binary PSR B1957+20},
  author = {Arzoumanian, Z. and Fruchter, A. S. and Taylor, J. H.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19950036387},
  note = {Source identifier: 19950036387}
}