@misc{indiciae30cf2293ccfe,
  title = {Membrane Vibration Tests Using Surface-Bonded Piezoelectric Patch Actuation},
  author = {Gasper, James L. and Pappa, Richard S.},
  year = {2003},
  url = {https://ntrs.nasa.gov/citations/20030025706},
  note = {Source identifier: 20030025706}
}