@misc{indiciae20c1748a04ec,
  title = {Air pollutant intrusion into the Wieliczka Salt Mine},
  author = {L.G. Salmon and G.R. Cass and R. Kozlowski and A. Hejda and E.C. Spiker and A. L. Bates},
  year = {1996},
  doi = {10.1021/es950306j},
  url = {https://pubs.usgs.gov/publication/70018722},
  note = {Source identifier: 70018722}
}