@misc{indiciaea0d7791b5ed2,
  title = {Turbopumps for cryogenic upper stage engines},
  author = {Lauffer, J. R. and Zachary, A. T.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730064093},
  note = {Source identifier: 19730064093}
}