@misc{indiciae538aae5643cf,
  title = {Compressible flow across shaft face seals},
  author = {Johnson, R. L. and Ludwig, L. P. and Zuk, J.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710062895},
  note = {Source identifier: 19710062895}
}