@misc{indiciae015aa1895fb2,
  title = {Progress in SP-100 tribological coatings},
  author = {Ring, Peter J. and Roy, Prodyot and Schuster, Gary B. and Busboom, Herbert J.},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930041942},
  note = {Source identifier: 19930041942}
}