@misc{indiciae24c180d26026,
  title = {Deployable elements of the orbiting geophysical observatories.},
  author = {Beard, T. W. and Scull, W. E.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690039617},
  note = {Source identifier: 19690039617}
}