@misc{indiciae2556b03a5917,
  title = {The Advanced Solar Observatory},
  author = {Walker, Arthur B. C., Jr. and Bailey, Wayne and Chupp, Edward L. and Hudson, Hugh S. and Moore, Ronald and Roberts, William and Hoover, Richard B.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910025777},
  note = {Source identifier: 19910025777}
}