@misc{indiciaee48368ccf716,
  title = {Provisional specification for satellite time in a geomagnetic environment},
  author = {Stevens, N. J. and Lovell, R. R. and Purvis, C. K.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780002230},
  note = {Source identifier: 19780002230}
}