@conference{76491,
  author = {Nicholas Carino},
  title = {The Impact-Echo Method: An Overview},
  year = {2001},
  month = {2001-05-01},
  publisher = {Proceedings 2001 World Structural Engineering Congress, ASCE},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860355},
  language = {en},
}