@misc{1178511,
  author = {W D Kovacs and L A Salmone and F Y Yokel},
  title = {Comparison of energy measurements in the standard penetration test using the cathead and rope method ::phases I and II : final report},
  year = {1983},
  month = {1983-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.83-2760},
  language = {en},
}