@misc{indiciaeed21f8ad12cd,
  title = {Imagining physically impossible self-rotations: geometry is more important than gravity},
  author = {Creem, S. H. and Wraga, M. and Proffitt, D. R. and Kaiser, M. K.},
  year = {2001},
  url = {https://ntrs.nasa.gov/citations/20040112306},
  note = {Source identifier: 20040112306}
}