@article{1334061,
  author = {B. Carol Johnson and Maritoni Litorja and James Butler},
  title = {Preliminary Results of Aperture Area Comparison for Exo-Atmospheric Solar Irradiance},
  year = {2003},
  number = {5151},
  month = {2003-01-01 00:01:00},
  publisher = {SPIE},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=104554},
  language = {en},
}