@misc{indiciae80fafea5f821,
  title = {Pluto's structure and composition suggest origin in the solar, not a planetary, nebula},
  author = {Mckinnon, William B. and Mueller, Steve},
  year = {1988},
  url = {https://ntrs.nasa.gov/citations/19890036066},
  note = {Source identifier: 19890036066}
}