@misc{indiciae3a979db1e38c,
  title = {Grinding Inside A Toroidal Cavity},
  author = {Mayer, Walter and Adams, James F. and Burley, Richard K.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870000564},
  note = {Source identifier: 19870000564}
}