@misc{indiciae49445fbddb09,
  title = {A Correlation Between Changes in Solar Luminosity and Differential Radius Measurements},
  author = {Kroll, R. J. and Hill, H. A. and Beardsley, B. J.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910003153},
  note = {Source identifier: 19910003153}
}