@misc{indiciae4f87f95962b8,
  title = {Nonlinear ultrasonic scanning to detect material defects},
  author = {Yost, William T. and Cantrell, John H.},
  year = {1998},
  url = {https://ntrs.nasa.gov/citations/20080004593},
  note = {Source identifier: 20080004593}
}