@conference{11176,
  author = {Carl Miller and Yuqin Zong and Yoshihiro Ohno},
  title = {LED Photometric Calibrations at the National Institute of Standards and Technology and Future Measurement Needs of LEDs},
  year = {2004},
  number = {SPIE Vol. 5530},
  month = {2004-10-20},
  publisher = {Proceedings of the SPIE 49th Annual Meeting},
  doi = {https://doi.org/10.1117/12.566635},
  language = {en},
}