@misc{indiciae42eca67e2a09,
  title = {Particle orbits in a rotating liquid},
  author = {Roberts, Glyn O. and Kornfeld, Dale M. and Fowlis, William W.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910066393},
  note = {Source identifier: 19910066393}
}