@conference{73446,
  author = {David Didion and J Brown},
  title = {Challenges in Developing Environmentally Safe Heat Pumping Systems},
  year = {2000},
  month = {2000-07-01},
  publisher = {ASME-ZSITS International Thermal Science Seminar | | |, Bled, RU},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=860821},
  language = {en},
}