@misc{indiciae52bbd4afcefd,
  title = {PPP/nonreal-time trajectory program interface requirements and capabilities},
  author = {Mcgavern, J. L. and Arbet, J. D.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19760007063},
  note = {Source identifier: 19760007063}
}