@misc{1181956,
  author = {Stephen R Petersen and George E Kelly},
  title = {an economic analysis of efficiency improvements to residential gas- and oil-fired central heating equipment:},
  year = {1980},
  month = {1980-01-01 05:01:00},
  publisher = {, National Institute of Standards and Technology, Gaithersburg, MD},
  doi = {https://doi.org/10.6028/NBS.IR.80-2079},
  language = {en},
}