@misc{indiciae63fa22dccbc7,
  title = {Active Piezoelectric Diaphragms},
  author = {Bryant, Robert G. and Effinger, Robert T., IV and Aranda, Isaiah, Jr. and Copeland, Ben M. and Covington, Ed W., III},
  year = {2002},
  url = {https://ntrs.nasa.gov/citations/20030013641},
  note = {Source identifier: 20030013641}
}