@misc{indiciaeb1659159b33e,
  title = {Optical detection of pulsed surface particle displacements},
  author = {Zerwekh, P. S. and Claus, R. O.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810060317},
  note = {Source identifier: 19810060317}
}