@misc{indiciae8c99df2f40af,
  title = {How do Polar Stratospheric Clouds Form?},
  author = {Drdla, Katja and Gandrud, Bruce and Baumgardner, Darrel and Herman, Robert and Gore, Warren J.},
  year = {2000},
  url = {https://ntrs.nasa.gov/citations/20010080478},
  note = {Source identifier: 20010080478}
}