@misc{indiciae83120984f61f,
  title = {Phase Calibration for the Block 1 VLBI System},
  author = {Roth, M. G. and Runge, T. F.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19830026694},
  note = {Source identifier: 19830026694}
}