@conference{22666,
  author = {Keith Gillis and Jintao Zhang and H. Lin},
  title = {Characterization of Piezoelectric Ceramic Transducer for Accurate speed-of-Spound Measurement},
  year = {2010},
  number = {31},
  month = {2010-07-30},
  publisher = {4th International Workshop on Progress in Determining the Boltzmann Constant, Torino, -1},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=904670},
  language = {en},
}