@misc{indiciae0d2f5ecae5b9,
  title = {Detecting contamination on a metal surface},
  author = {Harris, J. M. and Marcus, H. L. and Smith, T.},
  year = {1977},
  url = {https://ntrs.nasa.gov/citations/19760000552},
  note = {Source identifier: 19760000552}
}