@misc{indiciae823cae0e43b5,
  title = {Torque on a sphere inside a rotating cylinder.},
  author = {Mena, B. and Levinson, E. and Caswell, B.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720060048},
  note = {Source identifier: 19720060048}
}