@misc{indiciaed8a9a17f9be2,
  title = {Where do comets come from?},
  author = {Weissman, P. R. and Levison, H. and Dones, L. and Stern, A. and Duncan, M.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20060033457},
  note = {Source identifier: 20060033457}
}