@misc{indiciaea25aba3d7eb8,
  title = {A two-level approach to VLBI terrestrial and celestial reference frames using both least-squares adjustment and Kalman filter algorithms},
  author = {Wu, X. and Parker, J. and Heflin, M. and Chin, T. and Abbondanza, C. and Gross, R. and Bohm, J. and Krasna, H. and Soja, Benedikt},
  year = {2017},
  url = {https://ntrs.nasa.gov/citations/20210005965},
  note = {Source identifier: 20210005965}
}