@misc{indiciaefd83d7f91dbf,
  title = {Potential problems related to weightlessness and artificial gravity},
  author = {Piland, W. M. and Stone, R. W., Jr.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19690006297},
  note = {Source identifier: 19690006297}
}