@misc{indiciae4684fb749419,
  title = {Advanced optical blade tip clearance measurement system},
  author = {Ford, M. J. and Honeycutt, R. E. and Nordlund, R. E. and Robinson, W. W.},
  year = {1978},
  url = {https://ntrs.nasa.gov/citations/19780023163},
  note = {Source identifier: 19780023163}
}