@misc{indiciae6e37185e424f,
  title = {Comment on "Impact ejecta layer from the mid-Devonian: possible connection to global mass extinctions".},
  author = {Grzegorz Racki and Christian Koeberl},
  year = {2004},
  doi = {10.1126/science.303.5657.471a},
  url = {https://pubmed.ncbi.nlm.nih.gov/14739442/},
  note = {Source identifier: 14739442}
}