@misc{indiciae14a4ddd86e15,
  title = {Radio-source positions from VLBI},
  author = {Ma, C. and Clark, T. A. and Ryan, J. W. and Herring, T. A. and Shapiro, I. I.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870033855},
  note = {Source identifier: 19870033855}
}