@misc{indiciaef75c1504cc00,
  title = {Materials characterization using acoustic nonlinearity parameters and harmonic generation - Engineering materials},
  author = {Yost, William T. and Cantrell, John H.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19920031020},
  note = {Source identifier: 19920031020}
}