@misc{indiciae9bdaf58c8b31,
  title = {Physical processes in polar stratospheric ice clouds},
  author = {Toon, Owen B. and Ferry, G. and Turco, R. P. and Jordan, J. and Goodman, J.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890066528},
  note = {Source identifier: 19890066528}
}