@conference{769031,
  author = {Robert Phelan and Clark Hamilton and Gordon Day},
  title = {Radiometry without Standard Sources/Electrically Calibrated Pyroelectrics},
  year = {1975},
  number = {62},
  month = {1975-01-01 00:01:00},
  publisher = {Proc. Intl. Soc. for Optical Engineering (SPIE), Undefined},
  language = {en},
}