@misc{1176756,
  author = {George N Walton},
  title = {Validation test of an earth contact heat transfer algorithm:},
  year = {1985},
  month = {1985-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.85-3201},
  language = {en},
}