@misc{indiciae162ef331b315,
  title = {Precision orbit computations for an operational environment},
  author = {Doll, C. E. and Eggert, D. F. and Smith, R. L.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19820002195},
  note = {Source identifier: 19820002195}
}