@misc{indiciaed9c1e05f38b1,
  title = {Decrease of summer tropospheric ozone concentrations in Antarctica},
  author = {Schnell, R. C. and Stone, R. S. and Liu, S. C. and Oltmans, S. J. and Hofmann, D. J.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910058325},
  note = {Source identifier: 19910058325}
}