@misc{indiciae48a87bde4f73,
  title = {Saturn's rings - A survey},
  author = {Cook, A. F. and Franklin, F. A. and Palluconi, F. D.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710022948},
  note = {Source identifier: 19710022948}
}