@misc{indiciaeccac97d7b14c,
  title = {Electrostatic forces in planetary rings},
  author = {Goertz, C. K. and Shan, Linhua and Havnes, O.},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19880039814},
  note = {Source identifier: 19880039814}
}