@misc{1184131,
  author = {P A Mansbach and C I Holmer},
  title = {Techniques for the measurement of acoustic impedance of asphalt:},
  year = {1978},
  month = {1978-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.78-1541},
  language = {en},
}