@misc{indiciae38941a20953c,
  title = {Astronomical EUV/X-ray observatories on the moon},
  author = {Walker, Arthur B. C., Jr. and Timothy, J. G. and Hoover, Richard B. and Barbee, Troy W., Jr.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19910071996},
  note = {Source identifier: 19910071996}
}