@misc{indiciae171b6c7ba9b1,
  title = {Spectrophotometer-Integrating-Sphere System for Computing Solar Absorptance},
  author = {Witte, William G., Jr. and Slemp, Wayne S. and Perry, John E., Jr.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910011152},
  note = {Source identifier: 19910011152}
}