@misc{indiciaefa977a5143bc,
  title = {Orbiting solar observatory /OSO/},
  author = {Oertel, G. K. and Ashworth, C. D. and Mitchell, J. L.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19740030041},
  note = {Source identifier: 19740030041}
}