@misc{indiciae1dcc777615c8,
  title = {Viking '75 spacecraft design and test summary. Volume 2: Orbiter design},
  author = {Holmberg, N. A. and Faust, R. P. and Holt, H. M.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810001593},
  note = {Source identifier: 19810001593}
}