@misc{indiciaef772407fd1c5,
  title = {Centrifugally Obtained Artificial Gravity},
  author = {Hoffman, D. B. and Mc Gaughy, R. E.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690023138},
  note = {Source identifier: 19690023138}
}