@misc{indiciae6e0861c6c3eb,
  title = {Jet Propulsion Laboratory IGS Analysis Center Report},
  author = {Zumberge, James F. and Jefferson, David C. and Blewitt, Geoffrey and Heflin, Michael B. and Webb, Frank H.},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/20060038797},
  note = {Source identifier: 20060038797}
}