@misc{indiciae31a81755fe43,
  title = {Comet Siding Spring Encounters Mars},
  author = {Guinn, Joe and Chodas, Paul and Lock, Rob and Edwards, Chad and Zurek, Richard},
  year = {2014},
  url = {https://ntrs.nasa.gov/citations/20160009631},
  note = {Source identifier: 20160009631}
}