@misc{indiciaef5777d1ba0ab,
  title = {GEODYN system description, volume 1},
  author = {Chin, M. M. and Goad, C. C. and Martin, T. V.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19750003343},
  note = {Source identifier: 19750003343}
}