@misc{indiciaec5d1ec85fecb,
  title = {Global Velocities and Positions Determined from GPS Data Spanning Three Years},
  author = {Heflin, M. and Blewitt, G. and Jefferson, D. and Vigue, Y. and Webb, F. and Zumberge, J.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/20060042117},
  note = {Source identifier: 20060042117}
}