@misc{indiciaed4d1991ea3d8,
  title = {Process Upsets Involving Trace Contaminant Control Systems},
  author = {Graf, John C. and Perry, Jay and Wright, John and Bahr, Jim},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20110011468},
  note = {Source identifier: 20110011468}
}