@misc{indiciae9fa1f4db6d8b,
  title = {Tropospheric delay ray tracing applied in VLBI analysis},
  author = {David Eriksson and D. S. MacMillan and John M. Gipson},
  url = {https://ntrs.nasa.gov/citations/19543020016374},
  note = {Source identifier: 19543020016374}
}