@misc{indiciaedb5c9e4716a6,
  title = {Calculation of the general relativistic perihelion shift using isotropic coordinates.},
  author = {Oconnell, R. F.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19680059951},
  note = {Source identifier: 19680059951}
}