@misc{indiciae643b018d8ff7,
  title = {High-speed, self-acting shaft seal (circumferential type)},
  author = {Ludwig, L. P. and Hady, W. F.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720000446},
  note = {Source identifier: 19720000446}
}