@misc{indiciae6fb22f526b8d,
  title = {Applications of generalized pulse-echo formulas for evaluation of multilayered structures},
  author = {Chern, E. J. and Djordjevic, B. B.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19920030989},
  note = {Source identifier: 19920030989}
}