@misc{indiciaeefb91ab877bb,
  title = {Saturn's rings - A survey.},
  author = {Cook, A. F. and Franklin, F. A. and Palluconi, F. D.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730041337},
  note = {Source identifier: 19730041337}
}