@misc{1175501,
  author = {Mary Sansalone and Nicholas J Carino},
  title = {Impact-echo ::a method for flaw detection in concrete using transient stress waves},
  year = {1986},
  month = {1986-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.86-3452},
  language = {en},
}