@misc{indiciae1361b90182da,
  title = {Saturn's rings - Spectral reflectivity and compositional implications},
  author = {Johnson, T. V. and Lebofsky, L. A. and Mccord, T. B.},
  year = {1970},
  url = {https://ntrs.nasa.gov/citations/19710035160},
  note = {Source identifier: 19710035160}
}