@misc{1180416,
  author = {George T Armstrong and Thomas L Jobe},
  title = {Heating values of natural gas and its components:},
  year = {1982},
  month = {1982-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.81-2401},
  language = {en},
}