@misc{58446,
  author = {George Eppeldauer},
  title = {NIST Technical Note No. 1621: Optical radiation measurements based on detector standards},
  year = {2009},
  month = {2009-03-11},
  publisher = {Technical Note (NIST TN), National Institute of Standards and Technology, Gaithersburg, MD},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901369},
  language = {en},
}