@misc{1147196,
  author = {Paul Klieger and Kenneth Snyder},
  title = {Highway concrete (HWYCON) expert system user reference and enhancement guide:},
  year = {1993},
  month = {1993-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NIST.IR.5184},
  language = {en},
}