@misc{1179876,
  author = {Esher Kweller and Robert L Palla},
  title = {A test method and calculation procedure for determining annual efficiency for vented household heaters and furnace equipped with modulating-type controls:},
  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.82-2497},
  language = {en},
}