@misc{indiciaecdf7876f6910,
  title = {Photometer calibration error using extended standard sources},
  author = {Torr, M. R. and Hays, P. B. and Kennedy, B. C. and Torr, D. G.},
  year = {1976},
  url = {https://ntrs.nasa.gov/citations/19920055482},
  note = {Source identifier: 19920055482}
}