@conference{53561,
  author = {George Free and James Randa and Robert Billinger},
  title = {Radiometer Measurements of a Near-Ambient, Variable-Temperature Noise Standard},
  year = {2004},
  month = {2004-06-07},
  publisher = {Proc., Conf. Prec. Electromagn. Meas., Teddington, -1},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=31593},
  language = {en},
}