@misc{indiciae98c8caa6177a,
  title = {Solar irradiance variations due to active regions},
  author = {Oster, L. and Schatten, K. H. and Sofia, S.},
  year = {1982},
  url = {https://ntrs.nasa.gov/citations/19820049652},
  note = {Source identifier: 19820049652}
}