@misc{indiciaeaf3fbefce9a2,
  title = {Internal rotor friction instability},
  author = {Walton, J. and Artiles, A. and Lund, J. and Dill, J. and Zorzi, E.},
  year = {1990},
  url = {https://ntrs.nasa.gov/citations/19900012079},
  note = {Source identifier: 19900012079}
}