@misc{indiciae46584b85a678,
  title = {Manned spacecraft systems cost model, volume III. Technical report, Apr. 1965 - Jun. 1966},
  author = {Wagner, D. E.},
  year = {1966},
  url = {https://ntrs.nasa.gov/citations/19660024211},
  note = {Source identifier: 19660024211}
}