@misc{indiciae7cc3d606bb29,
  title = {Design considerations in mechanical face seals for improved performance. I - Basic configurations},
  author = {Ludwig, L. P. and Greiner, H. F.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780049274},
  note = {Source identifier: 19780049274}
}