@misc{indiciaed64dbda946f2,
  title = {Design considerations in mechanical face seals for improved performance. 1: Basic configurations},
  author = {Ludwig, L. P. and Greiner, H. F.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19780005496},
  note = {Source identifier: 19780005496}
}